Coft: Create Payment

Step 3 of the first-time card-on-file (COFT) flow (steps 1, 2, 3).
There is no separate API for this step. Use Create Payment under the Seamless
category (POST /api/pay/v1/orders/{orderId}/payments) and select the
Coft: Create Payment example / CoftSaveCardPaymentRequest schema from the request body dropdown.

It pays the order from step 2 with full card details and save: true, which
saves the card and creates a token against the customer. On later orders for
the same customer, use Fetch Coft Token (step 4) and Payment With Token (step 5) instead.