Add swell provider folder

framework/swell/fetcher.ts

@@ -0,0 +1,18 @@
+import { Fetcher } from '@commerce/utils/types'
+import { API_TOKEN, API_URL } from './const'
+import { handleFetchResponse } from './utils'
+
+const fetcher: Fetcher = async ({ method = 'POST', variables, query }) => {
+  return handleFetchResponse(
+    await fetch(API_URL, {
+      method,
+      body: JSON.stringify({ query, variables }),
+      headers: {
+        'X-Shopify-Storefront-Access-Token': API_TOKEN!,
+        'Content-Type': 'application/json',
+      },
+    })
+  )
+}
+
+export default fetcher