post https://qa-api.giftlocal.com/api/integration/gifting/send-gift
The endpoint assumes payment was captured externally.
This endpoint can also be used to simply generate a gift card code without delivery
by setting the delivery method to 3 (our indicator for hand delivered gifts).
The request object is used by several of our APIs - but this particular endpoint enforces an External Transaction
paymentMethodID (2) and requires supplying the externalTransaction fields and externalStorefrontID.