feat(stripe): add support for afterpay clearpay through stripe

[Narayanbhat166]

Type of Change

• [x] New feature

Description

This PR will support creating pay_later payments using afterpay_clearpay as the issuer through stripe. This is a redirection flow.

Motivation and Context

#347

How did you test it?

• Create a payment with payment_method_data as pay_later and body as

{
  "payment_method_data": {
    "pay_later": {
      "afterpay_clearpay_redirect": {
        "issuer_name": "afterpay_clearpay",
        "billing_email": "[email protected]",
        "billing_name": "Juspay"
      }
    }
  }
}

• Complete the redirection
• Redirection status is succeeced

Checklist

• [x] I formatted the code cargo +nightly fmt --all
• [x] I addressed lints thrown by cargo clippy
• [x] I reviewed submitted code

[ashokkjag]

@Narayanbhat166 , For the address validation errors, I feel that if the address fields fail multiple constraints, we should return all the errors, or atleast return that what are all the mandatory fields, so that the developer can make sure the field conforms to the requirement with just single try.

[Narayanbhat166]

@Narayanbhat166 , For the address validation errors, I feel that if the address fields fail multiple constraints, we should return all the errors, or atleast return that what are all the mandatory fields, so that the developer can make sure the field conforms to the requirement with just single try.

Yes @ashokkjag I agree, that will be a good experience to user. Will take that up in a separate PR. Created an issue #451