Add Payment method

• CCG allows you to add below payment method to your wallet
  • CARD
  • BANK ACCOUNT
• A Customer can add a valid card to thier wallet and mark that card as default payment method
• Adding a payment method can be done through Convienient Checkout UI or Convienient Checkout API
• Channels supported to add a payment method
  • TEXT
  • EMAIL
  • ON SCREEN ENTRY
  • TELEPHONIC ENTRY