Issue:
feat(connector): [BANKOFAMERICA] Add Required Fields for GPAY

## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [x] New feature
- [ ] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
Following are the required fields for Google Pay Payments via Bank of America

1. Email
2. Billing Address(which contains the following fields)
  - First Name
  - Last Name
  - City
  - State
  - Zip/Postal Code
  - Country
  - Address Line 1


### 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`
3. `crates/router/src/configs`
4. `loadtest/config`
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## 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).
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https://github.com/juspay/hyperswitch-cloud/issues/3297

## How did you test it?
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Did you write an integration/unit/API test to verify the code changes?
Or did you test this change manually (provide relevant screenshots)?
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Test cases - Make a confirm false call, and make "list pm for merchant" call, in required fields, updated fields such as Billing first name, last name, line1, city, zip, country should show up for Bankofamerica
<img width="1728" alt="Screenshot 2023-11-30 at 1 24 50 AM" src="https://github.com/juspay/hyperswitch/assets/41580413/080b1aab-a438-497a-a32a-befa6919ab1c">
<img width="1728" alt="Screenshot 2023-11-30 at 1 24 57 AM" src="https://github.com/juspay/hyperswitch/assets/41580413/d38fc112-77da-4238-b6f6-32a70346fcfb">


## 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
- [ ] I added unit tests for my changes where possible
- [ ] I added a [CHANGELOG](/CHANGELOG.md) entry if applicable


Resolution:
<think>
PR Context:
- Title: feat(core): [Paypal] Add Preprocessing flow to CompleteAuthorize for Card 3DS Auth Verification
- Merged: 2023-11-28T11:29:23Z
- Files changed: 9 files
- Commits: 8 commits

Implementation approach:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [x] New feature
- [x] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->

- An auth verification call is made to paypal after 3ds challenge to get the status on whether to continue payment. 
- Pre processing flow is being used for the call since we want to send the response in case of failure
- Pre processing is
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** feat(core): [Paypal] Add Preprocessing flow to CompleteAuthorize for Card 3DS Auth Verification (#27
Files to modify:


**crates/router/src/connector/paypal.rs**
  Add:
    - function: private::get_headers
    - function: private::get_url
    - function: private::build_request
    - function: private::handle_response
    - function: private::get_error_response
    - impl: impl api::PaymentsPreProcessing for Paypal
    - impl: impl ConnectorIntegration<
        api::PreProcessing,
        types::PaymentsPreProcessingData,
        types::PaymentsResponseData,
    > for Paypal

**crates/router/src/connector/paypal/transformers.rs**
  Add:
    - struct: pub::PaypalPreProcessingResponse
    - struct: pub::CardParams
    - struct: pub::AuthResult
    - struct: pub::PaypalThreeDsParams
    - struct: pub::ThreeDsCheck
    - enum: pub::LiabilityShift
    - enum: pub::EnrollementStatus
    - enum: pub::AuthenticationStatus

**crates/router/src/consts.rs**
  Modify existing code

**crates/router/src/core/payments.rs**
  Modify existing code

**crates/router/src/core/payments/flows.rs**
  Modify existing code

**crates/router/src/core/payments/flows/authorize_flow.rs**
  Modify existing code

**crates/router/src/core/payments/flows/complete_authorize_flow.rs**
  Add:
    - function: private::preprocessing_steps

**crates/router/src/core/payments/transformers.rs**
  Modify existing code

**crates/router/src/types.rs**
  Modify existing code