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/address/add-item.ts

@@ -0,0 +1,47 @@
+import type { CustomerAddressEndpoint } from '.'
+
+const addItem: CustomerAddressEndpoint['handlers']['addItem'] = async ({
+  res,
+  body: { item, cartId },
+  config: { restBuyerFetch },
+}) => {
+  // Return an error if no item is present
+  if (!item) {
+    return res.status(400).json({
+      data: null,
+      errors: [{ message: 'Missing item' }],
+    })
+  }
+
+  // Return an error if no item is present
+  if (!cartId) {
+    return res.status(400).json({
+      data: null,
+      errors: [{ message: 'Cookie not found' }],
+    })
+  }
+
+  // Register address
+  const address = await restBuyerFetch('POST', `/me/addresses`, {
+    AddressName: 'main address',
+    CompanyName: item.company,
+    FirstName: item.firstName,
+    LastName: item.lastName,
+    Street1: item.streetNumber,
+    Street2: item.streetNumber,
+    City: item.city,
+    State: item.city,
+    Zip: item.zipCode,
+    Country: item.country.slice(0, 2).toLowerCase(),
+    Shipping: true,
+  }).then((response: { ID: string }) => response.ID)
+
+  // Assign address to order
+  await restBuyerFetch('PATCH', `/orders/Outgoing/${cartId}`, {
+    ShippingAddressID: address,
+  })
+
+  return res.status(200).json({ data: null, errors: [] })
+}
+
+export default addItem