Issue:
Bug: [REFACTOR] : [Forte] Error Message For Connector Implementation



### :memo: Feature Description

- In terms of errors, we are currently throwing a 'not supported' message, which shouldn't be the case as we are yet to decide on the implementation.


### :hammer: Possible Implementation

- In order to manage payment methods that are not implemented by Hyperswitch or yet to be implemented, the connector transformers file should make use of the NotImplemented ConnectorError enum variant.
- By doing so, we will throw same error message for all the Connector Implementation 
- You can check this PR for further reference https://github.com/juspay/hyperswitch/pull/2831


:bookmark: Note: All the changes needed should be contained within `hyperswitch/crates/router/src/connector/`


### :package: Have you spent some time checking if this feature request has been raised before?

- [X] I checked and didn't find a similar issue

### :package: Have you read the Contributing Guidelines?

- [X] I have read the [Contributing Guidelines](https://github.com/juspay/hyperswitch/blob/main/docs/CONTRIBUTING.md)

### :sparkles: Are you willing to submit a PR?


Pull request description:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [ ] Enhancement
- [x] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->


### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

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1. `config`
2. `crates/router/src/configs`
3. `loadtest/config`
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## Motivation and Context
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## How did you test it?
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## Checklist
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- [x] I formatted the code `cargo +nightly fmt --all`
- [x] I addressed lints thrown by `cargo clippy`
- [x] I reviewed the submitted code
- [ ] I added unit tests for my changes where possible
- [ ] I added a [CHANGELOG](/CHANGELOG.md) entry if applicable

Resolve #2840 

Testing:

Patch:
diff --git a/crates/router/src/connector/forte/transformers.rs b/crates/router/src/connector/forte/transformers.rs
index 4bb354f6cda..56555a0d97e 100644
--- a/crates/router/src/connector/forte/transformers.rs
+++ b/crates/router/src/connector/forte/transformers.rs
@@ -54,10 +54,9 @@ impl TryFrom<utils::CardIssuer> for ForteCardType {
             utils::CardIssuer::Visa => Ok(Self::Visa),
             utils::CardIssuer::DinersClub => Ok(Self::DinersClub),
             utils::CardIssuer::JCB => Ok(Self::Jcb),
-            _ => Err(errors::ConnectorError::NotSupported {
-                message: issuer.to_string(),
-                connector: "Forte",
-            }
+            _ => Err(errors::ConnectorError::NotImplemented(
+                utils::get_unimplemented_payment_method_error_message("Forte"),
+            )
             .into()),
         }
     }
@@ -67,10 +66,9 @@ impl TryFrom<&types::PaymentsAuthorizeRouterData> for FortePaymentsRequest {
     type Error = error_stack::Report<errors::ConnectorError>;
     fn try_from(item: &types::PaymentsAuthorizeRouterData) -> Result<Self, Self::Error> {
         if item.request.currency != enums::Currency::USD {
-            Err(errors::ConnectorError::NotSupported {
-                message: item.request.currency.to_string(),
-                connector: "Forte",
-            })?
+            Err(errors::ConnectorError::NotImplemented(
+                utils::get_unimplemented_payment_method_error_message("Forte"),
+            ))?
         }
         match item.request.payment_method_data {
             api_models::payments::PaymentMethodData::Card(ref ccard) => {
@@ -114,10 +112,9 @@ impl TryFrom<&types::PaymentsAuthorizeRouterData> for FortePaymentsRequest {
             | api_models::payments::PaymentMethodData::Voucher(_)
             | api_models::payments::PaymentMethodData::GiftCard(_)
             | api_models::payments::PaymentMethodData::CardToken(_) => {
-                Err(errors::ConnectorError::NotSupported {
-                    message: utils::SELECTED_PAYMENT_METHOD.to_string(),
-                    connector: "Forte",
-                })?
+                Err(errors::ConnectorError::NotImplemented(
+                    utils::get_unimplemented_payment_method_error_message("Forte"),
+                ))?
             }
         }
     }