Support Reversals for Push to Card

[matin]

Credits to a debit card should be treated the same way as credits to a bank account.

• [ ] Add ability to produce credit status of pending in tests #612
• [ ] Reverse a succeeded credit #620
• [ ] Reverse a pending credit #620

ping @cieplak

[mahmoudimus]

ping @balanced/spec-ialz - let's review this and get it out.

[matin]

Closing this issue in favor of #662.