refactor(infra): directory structure (#4615)

packages/backend/server/README.md

@@ -0,0 +1,23 @@
+# Server
+
+## Get started
+
+### Install dependencies
+
+```bash
+yarn
+```
+
+### Build Native binding
+
+```bash
+yarn workspace @affine/storage build
+```
+
+### Run server
+
+```bash
+yarn dev
+```
+
+now you can access the server GraphQL endpoint at http://localhost:3000/graphql