Create a new setup-intent for the given audience member.

This operation is the 1st step in creating a new payment-method that can be used to pay-by-text.

Steps to add a payment-method (this operation in bold):

• create a new stripe-setup-intent (ParrotAPI)

  • POST /api/v2/audience-members/me/stripe/setup-intents

• confirm the stripe-setup-intent (Stripe JavaScript SDK)

  • https://stripe.com/docs/js/setup_intents/confirm_setup

• create a new stripe-payment-method (ParrotAPI)

  • POST /api/v2/audience-members/me/stripe/payment-methods