add cloudflare R2 config

apps/backend/src/payload.config.ts

@@ -5,7 +5,7 @@ import sharp from 'sharp' // sharp-import
 import path from 'path'
 import { buildConfig, PayloadRequest } from 'payload'
 import { fileURLToPath } from 'url'
-
+import { r2Storage } from '@payloadcms/storage-r2'
 import { Categories } from './collections/Categories'
 import { Media } from './collections/Media'
 import { Pages } from './collections/Pages'
@@ -70,8 +70,11 @@ export default buildConfig({
   ].filter(Boolean),
   globals: [Header, Footer],
   plugins: [
-    ...plugins,
     // storage-adapter-placeholder
+    r2Storage({
+      bucket: cloudflare.env.R2,
+      collections: { media: true },
+    }),
   ],
   secret: process.env.PAYLOAD_SECRET,
   sharp,