[FEATURE] receive card_holder_name in confirm flow when using token for payment

[Chethan-rao]

Feature Description

Currently, even though card_holder_name was empty, /confirm would occur without any error. But few connectors require card_holder_name to be sent.

Possible Implementation

Add new object CardTokenData in payment_method_data object which can be used to send the card_holder_name during /confirm flow along with the token.
The token will fetch the stored card from locker. If this response has a card_holder_name, then it proceeds as usual without any error. Else it will check whether any CardTokenData object inside payment_method_data is sent or not. If not then error is thrown, if present then we update the card object received from locker to include the card_holder_name passed in CardTokenData during /confirm flow

Have you spent some time checking if this feature request has been raised before?

• I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!