Issue:
Bug: [FEATURE] Pass Customer name to connectors



### Feature Description

I need customer_name to be passed to stripe. This is required for evaluating the risk associated with a payment.

### Possible Implementation

Pass the `name` field ( `customer.name` ) when creating a customer at the connector.

### Have you spent some time checking if this feature request has been raised before?

- [X] I checked and didn't find a similar issue

### Have you read the Contributing Guidelines?

- [X] I have read the [Contributing Guidelines](https://github.com/juspay/hyperswitch/blob/main/docs/CONTRIBUTING.md)

### Are you willing to submit a PR?

None

Pull request description:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [x] Refactoring

## Description
<!-- Describe your changes in detail -->
This PR adds the support for sending `customer_name` to the connectors when creating the customer at the connectors end. 

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

<!--
Provide links to the files with corresponding changes.

Following are the paths where you can find config files:
1. `config`
2. `crates/router/src/configs`
3. `loadtest/config`
-->


## Motivation and Context
<!--
Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here.

If you don't have an issue, we'd recommend starting with one first so the PR
can focus on the implementation (unless it is an obvious bug or documentation fix
that will have little conversation).
-->
Passing customer name to the connector might be required for metadata scanning to evaluate the payment score and risk associated with a payment.

## How did you test it?
<!--
Did you write an integration/unit/API test to verify the code changes?
Or did you test this change manually (provide relevant screenshots)?
-->
- Create a payment for stripe connector with customer id, email and customer name.
```bash
curl --location 'https://sandbox.hyperswitch.io/payments' \
--header 'Content-Type: application/json' \
--header 'api-key: dev_16svHskpygTeiHAoy6RsRf3YxKlSV67FhT5P49UvfA73P1sTG1Tm6VG58a2B79Il' \
--data-raw '{
    "amount": 696969,
    "currency": "USD",
    "confirm": true,
    "name": "John Cena",
    "capture_method": "automatic",
    "phone": "999999999",
    "phone_country_code": "+65",
    "customer_id": "new_stripe_customer_7",
    "email": "example@juspay.in",
    "description": "Its my first payment request",
    "authentication_type": "no_three_ds",
    "payment_method": "card",
    "payment_method_type": "credit",
    "payment_method_data": {
        "card": {
            "card_number": "4242424242424242",
            "card_exp_month": "10",
            "card_exp_year": "25",
            "card_holder_name": "joseph Doe",
            "card_cvc": "123"
        }
    },
    "billing": {
        "address": {
            "line1": "1467",
            "line2": "Harrison Street",
            "line3": "Harrison Street",
            "city": "San Fransico",
            "state": "California",
            "zip": "94122",
            "country": "US",
            "first_name": "joseph",
            "last_name": "Doe"
        }
    },
    "shipping": {
        "address": {
            "line1": "1467",
            "line2": "Harrison Street",
            "line3": "Harrison Street",
            "city": "San Fransico",
            "state": "California",
            "zip": "94122",
            "country": "US",
            "first_name": "joseph",
            "last_name": "Doe"
        }
    },
    "statement_descriptor_name": "joseph",
    "statement_descriptor_suffix": "JS",
    "metadata": {
        "key1":"hello"
    }
}'
```
- Check the customer name at stripe dashboard.
<img width="507" alt="image" src="https://github.com/juspay/hyperswitch/assets/48803246/9df093e0-a66b-41ce-82c0-1b5567d7b4e2">


## Checklist
<!-- Put an `x` in the boxes that apply -->

- [x] I formatted the code `cargo +nightly fmt --all`
- [x] I addressed lints thrown by `cargo clippy`
- [x] I reviewed the submitted code


Testing:

- Create a payment for stripe connector with customer id, email and customer name.
```bash
curl --location 'https://sandbox.hyperswitch.io/payments' \
--header 'Content-Type: application/json' \
--header 'api-key: dev_16svHskpygTeiHAoy6RsRf3YxKlSV67FhT5P49UvfA73P1sTG1Tm6VG58a2B79Il' \
--data-raw '{
    "amount": 696969,
    "currency": "USD",
    "confirm": true,
    "name": "John Cena",
    "capture_method": "automatic",
    "phone": "999999999",
    "phone_country_code": "+65",
    "customer_id": "new_stripe_customer_7",
    "email": "example@juspay.in",
    "description": "Its my first payment request",
    "authentication_type": "no_three_ds",
    "payment_method": "card",
    "payment_method_type": "credit",
    "payment_method_data": {
        "card": {
            "card_number": "4242424242424242",
            "card_exp_month": "10",
            "card_exp_year": "25",
            "card_holder_name": "joseph Doe",
            "card_cvc": "123"
        }
    },
    "billing": {
        "address": {
            "line1": "1467",
            "line2": "Harrison Street",
            "line3": "Harrison Street",
            "city": "San Fransico",
            "state": "California",
            "zip": "94122",
            "country": "US",
            "first_name": "joseph",
            "last_name": "Doe"
        }
    },
    "shipping": {
        "address": {
            "line1": "1467",
            "line2": "Harrison Street",
            "line3": "Harrison Street",
            "city": "San Fransico",
            "state": "California",
            "zip": "94122",
            "country": "US",
            "first_name": "joseph",
            "last_name": "Doe"
        }
    },
    "statement_descriptor_name": "joseph",
    "statement_descriptor_suffix": "JS",
    "metadata": {
        "key1":"hello"
    }
}'
```
- Check the customer name at stripe dashboard.
<img width="507" alt="image" src="https://github.com/juspay/hyperswitch/assets/48803246/9df093e0-a66b-41ce-82c0-1b5567d7b4e2">

Patch:
diff --git a/crates/router/src/connector/stax/transformers.rs b/crates/router/src/connector/stax/transformers.rs
index 01ae751f748..596ea1145ec 100644
--- a/crates/router/src/connector/stax/transformers.rs
+++ b/crates/router/src/connector/stax/transformers.rs
@@ -147,7 +147,7 @@ pub struct StaxCustomerRequest {
     #[serde(skip_serializing_if = "Option::is_none")]
     email: Option<Email>,
     #[serde(skip_serializing_if = "Option::is_none")]
-    firstname: Option<String>,
+    firstname: Option<Secret<String>>,
 }
 
 impl TryFrom<&types::ConnectorCustomerRouterData> for StaxCustomerRequest {
diff --git a/crates/router/src/connector/stripe/transformers.rs b/crates/router/src/connector/stripe/transformers.rs
index 89e18692414..1dbb310868a 100644
--- a/crates/router/src/connector/stripe/transformers.rs
+++ b/crates/router/src/connector/stripe/transformers.rs
@@ -2018,7 +2018,7 @@ impl TryFrom<&types::ConnectorCustomerRouterData> for CustomerRequest {
             description: item.request.description.to_owned(),
             email: item.request.email.to_owned(),
             phone: item.request.phone.to_owned(),
-            name: item.request.name.to_owned().map(Secret::new),
+            name: item.request.name.to_owned(),
             source: item.request.preprocessing_id.to_owned(),
         })
     }
diff --git a/crates/router/src/core/payments/flows/authorize_flow.rs b/crates/router/src/core/payments/flows/authorize_flow.rs
index 15c79f4b9d9..c6de222f7d8 100644
--- a/crates/router/src/core/payments/flows/authorize_flow.rs
+++ b/crates/router/src/core/payments/flows/authorize_flow.rs
@@ -376,7 +376,7 @@ impl<F> TryFrom<&types::RouterData<F, types::PaymentsAuthorizeData, types::Payme
             payment_method_data: data.request.payment_method_data.clone(),
             description: None,
             phone: None,
-            name: None,
+            name: data.request.customer_name.clone(),
             preprocessing_id: data.preprocessing_id.clone(),
         })
     }
diff --git a/crates/router/src/core/payments/transformers.rs b/crates/router/src/core/payments/transformers.rs
index 5ab6bffc8e6..c7b1ecc2669 100644
--- a/crates/router/src/core/payments/transformers.rs
+++ b/crates/router/src/core/payments/transformers.rs
@@ -34,7 +34,7 @@ pub async fn construct_payment_router_data<'a, F, T>(
     connector_id: &str,
     merchant_account: &domain::MerchantAccount,
     _key_store: &domain::MerchantKeyStore,
-    customer: &Option<domain::Customer>,
+    customer: &'a Option<domain::Customer>,
     merchant_connector_account: &helpers::MerchantConnectorAccountType,
 ) -> RouterResult<types::RouterData<F, T, types::PaymentsResponseData>>
 where
@@ -89,6 +89,7 @@ where
         connector_name: connector_id.to_string(),
         payment_data: payment_data.clone(),
         state,
+        customer_data: customer,
     };
 
     let customer_id = customer.to_owned().map(|customer| customer.customer_id);
@@ -968,6 +969,7 @@ where
     connector_name: String,
     payment_data: PaymentData<F>,
     state: &'a AppState,
+    customer_data: &'a Option<domain::Customer>,
 }
 impl<F: Clone> TryFrom<PaymentAdditionalData<'_, F>> for types::PaymentsAuthorizeData {
     type Error = error_stack::Report<errors::ApiErrorResponse>;
@@ -1048,6 +1050,17 @@ impl<F: Clone> TryFrom<PaymentAdditionalData<'_, F>> for types::PaymentsAuthoriz
             .as_ref()
             .map(|surcharge_details| surcharge_details.final_amount)
             .unwrap_or(payment_data.amount.into());
+
+        let customer_name = additional_data
+            .customer_data
+            .as_ref()
+            .and_then(|customer_data| {
+                customer_data
+                    .name
+                    .as_ref()
+                    .map(|customer| customer.clone().into_inner())
+            });
+
         Ok(Self {
             payment_method_data: payment_method_data.get_required_value("payment_method_data")?,
             setup_future_usage: payment_data.payment_intent.setup_future_usage,
@@ -1062,6 +1075,7 @@ impl<F: Clone> TryFrom<PaymentAdditionalData<'_, F>> for types::PaymentsAuthoriz
             currency: payment_data.currency,
             browser_info,
             email: payment_data.email,
+            customer_name,
             payment_experience: payment_data.payment_attempt.payment_experience,
             order_details,
             order_category,
@@ -1354,6 +1368,17 @@ impl<F: Clone> TryFrom<PaymentAdditionalData<'_, F>> for types::SetupMandateRequ
             .change_context(errors::ApiErrorResponse::InvalidDataValue {
                 field_name: "browser_info",
             })?;
+
+        let customer_name = additional_data
+            .customer_data
+            .as_ref()
+            .and_then(|customer_data| {
+                customer_data
+                    .name
+                    .as_ref()
+                    .map(|customer| customer.clone().into_inner())
+            });
+
         Ok(Self {
             currency: payment_data.currency,
             confirm: true,
@@ -1368,6 +1393,7 @@ impl<F: Clone> TryFrom<PaymentAdditionalData<'_, F>> for types::SetupMandateRequ
             setup_mandate_details: payment_data.setup_mandate,
             router_return_url,
             email: payment_data.email,
+            customer_name,
             return_url: payment_data.payment_intent.return_url,
             browser_info,
             payment_method_type: attempt.payment_method_type,
diff --git a/crates/router/src/types.rs b/crates/router/src/types.rs
index e236113e676..0809ca17820 100644
--- a/crates/router/src/types.rs
+++ b/crates/router/src/types.rs
@@ -392,6 +392,7 @@ pub struct PaymentsAuthorizeData {
     /// ```
     pub amount: i64,
     pub email: Option<Email>,
+    pub customer_name: Option<Secret<String>>,
     pub currency: storage_enums::Currency,
     pub confirm: bool,
     pub statement_descriptor_suffix: Option<String>,
@@ -461,7 +462,7 @@ pub struct ConnectorCustomerData {
     pub description: Option<String>,
     pub email: Option<Email>,
     pub phone: Option<Secret<String>>,
-    pub name: Option<String>,
+    pub name: Option<Secret<String>>,
     pub preprocessing_id: Option<String>,
     pub payment_method_data: payments::PaymentMethodData,
 }
@@ -586,6 +587,7 @@ pub struct SetupMandateRequestData {
     pub router_return_url: Option<String>,
     pub browser_info: Option<BrowserInformation>,
     pub email: Option<Email>,
+    pub customer_name: Option<Secret<String>>,
     pub return_url: Option<String>,
     pub payment_method_type: Option<storage_enums::PaymentMethodType>,
     pub request_incremental_authorization: bool,
@@ -1342,19 +1344,6 @@ impl From<&&mut PaymentsAuthorizeRouterData> for AuthorizeSessionTokenData {
     }
 }
 
-impl From<&&mut PaymentsAuthorizeRouterData> for ConnectorCustomerData {
-    fn from(data: &&mut PaymentsAuthorizeRouterData) -> Self {
-        Self {
-            email: data.request.email.to_owned(),
-            preprocessing_id: data.preprocessing_id.to_owned(),
-            payment_method_data: data.request.payment_method_data.to_owned(),
-            description: None,
-            phone: None,
-            name: None,
-        }
-    }
-}
-
 impl<F> From<&RouterData<F, PaymentsAuthorizeData, PaymentsResponseData>>
     for PaymentMethodTokenizationData
 {
@@ -1411,6 +1400,7 @@ impl From<&SetupMandateRouterData> for PaymentsAuthorizeData {
             setup_mandate_details: data.request.setup_mandate_details.clone(),
             router_return_url: data.request.router_return_url.clone(),
             email: data.request.email.clone(),
+            customer_name: data.request.customer_name.clone(),
             amount: 0,
             statement_descriptor: None,
             capture_method: None,
diff --git a/crates/router/src/types/api/verify_connector.rs b/crates/router/src/types/api/verify_connector.rs
index c5fcce8b185..fbd94230584 100644
--- a/crates/router/src/types/api/verify_connector.rs
+++ b/crates/router/src/types/api/verify_connector.rs
@@ -24,6 +24,7 @@ impl VerifyConnectorData {
         types::PaymentsAuthorizeData {
             payment_method_data: api::PaymentMethodData::Card(self.card_details.clone()),
             email: None,
+            customer_name: None,
             amount: 1000,
             confirm: true,
             currency: storage_enums::Currency::USD,
diff --git a/crates/router/tests/connectors/aci.rs b/crates/router/tests/connectors/aci.rs
index 35c9cbd952d..c820b7acd6e 100644
--- a/crates/router/tests/connectors/aci.rs
+++ b/crates/router/tests/connectors/aci.rs
@@ -59,6 +59,7 @@ fn construct_payment_router_data() -> types::PaymentsAuthorizeRouterData {
             order_details: None,
             order_category: None,
             email: None,
+            customer_name: None,
             session_token: None,
             enrolled_for_3ds: false,
             related_transaction_id: None,
diff --git a/crates/router/tests/connectors/adyen.rs b/crates/router/tests/connectors/adyen.rs
index 49075080506..430ae0bac14 100644
--- a/crates/router/tests/connectors/adyen.rs
+++ b/crates/router/tests/connectors/adyen.rs
@@ -147,6 +147,7 @@ impl AdyenTest {
             order_details: None,
             order_category: None,
             email: None,
+            customer_name: None,
             payment_experience: None,
             payment_method_type: None,
             session_token: None,
diff --git a/crates/router/tests/connectors/bitpay.rs b/crates/router/tests/connectors/bitpay.rs
index 8bac7c13c85..892d5b1f208 100644
--- a/crates/router/tests/connectors/bitpay.rs
+++ b/crates/router/tests/connectors/bitpay.rs
@@ -81,6 +81,7 @@ fn payment_method_details() -> Option<types::PaymentsAuthorizeData> {
         order_details: None,
         order_category: None,
         email: None,
+        customer_name: None,
         payment_experience: None,
         payment_method_type: None,
         session_token: None,
diff --git a/crates/router/tests/connectors/cashtocode.rs b/crates/router/tests/connectors/cashtocode.rs
index 68c4eb94bf3..9d082445719 100644
--- a/crates/router/tests/connectors/cashtocode.rs
+++ b/crates/router/tests/connectors/cashtocode.rs
@@ -57,6 +57,7 @@ impl CashtocodeTest {
             order_details: None,
             order_category: None,
             email: None,
+            customer_name: None,
             payment_experience: None,
             payment_method_type,
             session_token: None,
diff --git a/crates/router/tests/connectors/coinbase.rs b/crates/router/tests/connectors/coinbase.rs
index 73ee93178c0..9a476df7fe6 100644
--- a/crates/router/tests/connectors/coinbase.rs
+++ b/crates/router/tests/connectors/coinbase.rs
@@ -83,6 +83,7 @@ fn payment_method_details() -> Option<types::PaymentsAuthorizeData> {
         order_details: None,
         order_category: None,
         email: None,
+        customer_name: None,
         payment_experience: None,
         payment_method_type: None,
         session_token: None,
diff --git a/crates/router/tests/connectors/cryptopay.rs b/crates/router/tests/connectors/cryptopay.rs
index 5df8d80461f..5e1b3f5ab47 100644
--- a/crates/router/tests/connectors/cryptopay.rs
+++ b/crates/router/tests/connectors/cryptopay.rs
@@ -81,6 +81,7 @@ fn payment_method_details() -> Option<types::PaymentsAuthorizeData> {
         order_details: None,
         order_category: None,
         email: None,
+        customer_name: None,
         payment_experience: None,
         payment_method_type: None,
         session_token: None,
diff --git a/crates/router/tests/connectors/opennode.rs b/crates/router/tests/connectors/opennode.rs
index b140a7c0517..69edec2af2c 100644
--- a/crates/router/tests/connectors/opennode.rs
+++ b/crates/router/tests/connectors/opennode.rs
@@ -82,6 +82,7 @@ fn payment_method_details() -> Option<types::PaymentsAuthorizeData> {
         order_details: None,
         order_category: None,
         email: None,
+        customer_name: None,
         payment_experience: None,
         payment_method_type: None,
         session_token: None,
diff --git a/crates/router/tests/connectors/utils.rs b/crates/router/tests/connectors/utils.rs
index db82cd7e032..ed3cdbe31b5 100644
--- a/crates/router/tests/connectors/utils.rs
+++ b/crates/router/tests/connectors/utils.rs
@@ -900,6 +900,7 @@ impl Default for PaymentAuthorizeType {
             order_details: None,
             order_category: None,
             email: None,
+            customer_name: None,
             session_token: None,
             enrolled_for_3ds: false,
             related_transaction_id: None,
diff --git a/crates/router/tests/connectors/worldline.rs b/crates/router/tests/connectors/worldline.rs
index 4f7a94780a5..8b865789003 100644
--- a/crates/router/tests/connectors/worldline.rs
+++ b/crates/router/tests/connectors/worldline.rs
@@ -92,6 +92,7 @@ impl WorldlineTest {
             order_details: None,
             order_category: None,
             email: None,
+            customer_name: None,
             session_token: None,
             enrolled_for_3ds: false,
             related_transaction_id: None,