refactor: make billing details optional during data migration (#8438)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>
Files to modify:


**payment_methods.rs**
  Add:
    - function: private::create_address
    - function: private::create_phone
    - function: private::create_billing
    - impl: impl PaymentMethodRecord

**payment_methods.rs**
  Add:
    - function: private::create_address
    - function: private::create_phone
    - function: private::create_billing
    - impl: impl PaymentMethodRecord