Vendure provider (#223)

* Minimal list/detail views working with Vendure

* Implement useCart/useAddItem

* Implement useUpdateItem & useRemoveItem

* Implement useSearch

* Add operations codegen, tidy up

* Dummy checkout page

* Implement auth/customer hooks

* Use env var for Shop API url

* Add some documentation

* Improve error handling

* Optimize preview image size

* Fix accidental change

* Update Vendure provider to latest changes

* Vendure provider: split out gql operations, remove unused files

* Update Vendure provider readme

* Add local next.config to Vendure provider, update docs

* Update to use demo server

* Fix build errors

* Use proxy for vendure api

* Simplify instructions in Vendure readme

* Refactor Vendure checkout api handler

* Improve image quality

pages/index.tsx

@@ -21,15 +21,15 @@ export async function getStaticProps({
     preview,
   })
 
-  const { categories, brands } = await getSiteInfo({ config, preview })
-  const { pages } = await getAllPages({ config, preview })
+  // const { categories, brands } = await getSiteInfo({ config, preview })
+  // const { pages } = await getAllPages({ config, preview })
 
   return {
     props: {
       products,
-      categories,
-      brands,
-      pages,
+      categories: [],
+      brands: [],
+      pages: [],
     },
     revalidate: 14400,
   }