🏗️(y-provider) manage auth in y-provider app

The way to connect to the hocuspocus server needs to be proxified in
nginx to query a dedicated route in the django application and then
follow the request to the express server with the additionnal headers.
The auth can be done in the express server by querying the backend on
the document retrieve endpoint. If the response status code is 200, the
user has access to the document, otherwise it is not the case. Then we
can check the abilities to determine what the user can do or not.

docker-compose.yml

@@ -185,11 +185,15 @@ services:
       context: .
       dockerfile: ./src/frontend/servers/y-provider/Dockerfile
       target: y-provider
+    command: ["yarn", "workspace", "server-y-provider", "run", "dev"]
+    working_dir: /app/frontend
     restart: unless-stopped
     env_file:
       - env.d/development/common
     ports:
       - "4444:4444"
+    volumes:
+      - ./src/frontend/:/app/frontend
 
   kc_postgresql:
     image: postgres:14.3