fix: resolve all the fields in payment_method related functions

## Description
After the current changes in the card locker, there are a few fields that were (left empty/contain dummy values) as they were pending on further discussions. These fields need to be addressed going forward

## Changes
Following are the functions that are in need of a fix
- [ ] `router::core::payment_methods::transformers::mk_add_card_response`
- [ ] `router::core::payment_methods::transformers::mk_add_card_request`
- [ ] `router::core::payment_methods::transformers::get_card_detail`

Start with router::core::payment_methods::transformers::mk_add_card_response, mk_add_card_request, and get_card_detail. Review the current card-locker changes and any related discussions to determine the expected values for each field, then verify that these functions no longer return empty or dummy fields using the relevant payment-method tests.

Written by the indexing model from the issue text.