Stripe FDW: Adding checkout sessions

[kav]

What kind of change does this PR introduce?

Adding checkout sessions to the Stripe FDW. For those wondering why this object before others, my particular use case needs to get at custom field data captured on checkout. Happy to help build out more objects once I make sure I'm doing this correctly.

This PR is currently WIP. I need to resolve running the tests locally, and documentation updates. So far I'm getting errors that indicate no data when running. Documentation on testing under contrib is out of date as well

docker-compose -f wrappers/.ci/docker-compose.yaml up -d
cargo pgx test pg15 --features stripe_fdw

What is the current behavior?

Not implemented

What is the new behavior?

Enables

create foreign table stripe.checkout_sessions (
  id text,
  customer text,
  payment_intent text,
  subscription text,
  attrs jsonb
)
  server stripe_server
  options (
    object 'checkout/sessions',
    rowid_column 'id'
  );

[burmecia]

@kav Thank you for the PR! Just let know once this is ready. And for local development, it might be the Stripe mock service doesn't have that data, could you try it using a real Stripe account?

[kav]

Looks great on a real account. The mock endpoint doesn't have customer, intent, or subscription on that mock so I removed that test and left the id test.

{
  "data": [
    {
      "after_expiration": null,
      "allow_promotion_codes": null,
      "amount_subtotal": null,
      "amount_total": null,
      "automatic_tax": {
        "enabled": false,
        "status": null
      },
      "billing_address_collection": null,
      "cancel_url": "https://example.com/cancel",
      "client_reference_id": null,
      "consent": null,
      "consent_collection": null,
      "currency": null,
      "customer": null,
      "customer_creation": null,
      "customer_details": null,
      "customer_email": null,
      "expires_at": 1234567890,
      "id": "cs_test_a1DmlfbOPqmbKHfpwpFQ0RM3pVXmKoESZbJxnKrPdMsLDPPMGYtEBcHGPR",
      "livemode": false,
      "locale": null,
      "metadata": {},
      "mode": "payment",
      "object": "checkout.session",
      "payment_intent": "pi_1Lb4lVDciZwYG8GP0fdnQDdd",
      "payment_link": null,
      "payment_method_collection": null,
      "payment_method_options": {},
      "payment_method_types": [
        "card"
      ],
      "payment_status": "unpaid",
      "phone_number_collection": {
        "enabled": false
      },
      "recovered_from": null,
      "setup_intent": null,
      "shipping_address_collection": null,
      "shipping_cost": null,
      "shipping_details": null,
      "shipping_options": [],
      "status": "expired",
      "submit_type": null,
      "subscription": null,
      "success_url": "https://example.com/success",
      "total_details": null,
      "url": null
    }
  ],
  "has_more": false,
  "object": "list",
  "url": "/v1/checkout/sessions"
}

[kav]

@burmecia should be ready to go. Let me know if it needs anything else

[burmecia]

LGTM, thanks for the PR!

[burmecia]

Can you make this list number correct?