Feature/pay id endpoints

[eddyjaga]

Short Description / Link to Ticket

This pull request adds support for managing PayID registrations in the Zai Payment library. The main changes introduce a new resource class for PayID operations, update the main module to expose this resource, and ensure the response handler recognizes PayID data.

PayID resource integration:

• Added a new ZaiPayment::Resources::PayId class (lib/zai_payment/resources/pay_id.rb) that provides methods to register, show, and deregister PayIDs for virtual accounts, including input validation and request construction.
• Updated the main ZaiPayment module to require the new PayID resource and provide a pay_ids accessor for users to interact with PayID operations. [1] [2]

Response handling:

• Updated the Response class to recognize pay_ids as a top-level data key, ensuring PayID API responses are parsed correctly.

Testing

Additional Notes