[REFACTOR] Integrate the card expiration month/year and security code newtypes in request/response types

### Feature Description

Our API models (request/response types) need to be refactored to use the card security code and expiry month/year newtypes added in PR #874.

2 such locations in our codebase are:

https://github.com/juspay/hyperswitch/blob/897250ebc3ee57392aae7e2e926d8c635ac9fc4f/crates/api_models/src/payments.rs#L152

https://github.com/juspay/hyperswitch/blob/897250ebc3ee57392aae7e2e926d8c635ac9fc4f/crates/api_models/src/payment_methods.rs#L77-L83

In other types, the fields might be called `cvc`, `cvv`, `expiry_month`, `expiry_year`, `exp_month`, `exp_year`, etc.

_For external contributors, clarify any questions you may have, and let us know that you're interested in picking this up. We'll assign this issue to you to reduce duplication of effort on the same task._