:sparkles: (backend) Improvement - link a credit card to a payment provider

[jonathanreveille]

Purpose

A credit card model is not linked to a payment provider. If the payment provider is changed than all existing credit card can not be used and will not be recognized by the new payment provider.

Proposal

• [x] Add new field for Credit Card model to store the name of the payment_provider that was used to tokenize the credit card.
• [x] Update manager method get_card_for_owner
• [x] Update the factory with new default value for payment_provider.
• [x] Refactor places in code where we can use get_card_for_owner
• [x] Find everywhere in the code where handle_notification triggers the creation of the credit card

[lunika]

To finish this PR you should add a migration, adding the current payment backend provider name in this field for already existing records