Add ordercloud provider (#500)

* Add ordercloud provider

* Fix provider errors

* Make submit checkout optional

* Make submit checkout optional

* Remove nullables when creating endpoint type

* Update readme

* Log checkout error

* Log error

* Save token to cookie

* Update fetch rest

* Use token at checkout

Co-authored-by: Luis Alvarez <luis@vercel.com>

framework/ordercloud/api/endpoints/customer/card/index.ts

@@ -0,0 +1,27 @@
+import type { CustomerCardSchema } from '../../../../types/customer/card'
+import type { OrdercloudAPI } from '../../..'
+
+import { GetAPISchema, createEndpoint } from '@commerce/api'
+import customerCardEndpoint from '@commerce/api/endpoints/customer/card'
+
+import getCards from './get-cards'
+import addItem from './add-item'
+import updateItem from './update-item'
+import removeItem from './remove-item'
+
+export type CustomerCardAPI = GetAPISchema<OrdercloudAPI, CustomerCardSchema>
+export type CustomerCardEndpoint = CustomerCardAPI['endpoint']
+
+export const handlers: CustomerCardEndpoint['handlers'] = {
+  getCards,
+  addItem,
+  updateItem,
+  removeItem,
+}
+
+const customerCardApi = createEndpoint<CustomerCardAPI>({
+  handler: customerCardEndpoint,
+  handlers,
+})
+
+export default customerCardApi