🏗️(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/files/etc/nginx/conf.d/default.conf

@@ -4,54 +4,6 @@ server {
     server_name localhost;
     charset utf-8;
 
-    # Proxy auth for collaboration server
-    location /collaboration/ws/ {
-        # Collaboration Auth request configuration
-        auth_request /collaboration-auth;
-        auth_request_set $authHeader $upstream_http_authorization;
-        auth_request_set $canEdit $upstream_http_x_can_edit;
-        auth_request_set $userId $upstream_http_x_user_id;
-
-        # Pass specific headers from the auth response
-        proxy_set_header Authorization $authHeader;
-        proxy_set_header X-Can-Edit $canEdit;
-        proxy_set_header X-User-Id $userId;
-
-        # Ensure WebSocket upgrade
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection "Upgrade";
-
-        # Collaboration server
-        proxy_pass http://y-provider:4444;
-
-        # Set appropriate timeout for WebSocket
-        proxy_read_timeout 86400;
-        proxy_send_timeout 86400;
-
-        # Preserve original host and additional headers
-        proxy_set_header Host $host;
-    }
-
-    location /collaboration-auth {
-        proxy_pass http://app-dev:8000/api/v1.0/documents/collaboration-auth/;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Original-URL $request_uri;
-        
-        # Prevent the body from being passed
-        proxy_pass_request_body off;
-        proxy_set_header Content-Length "";
-        proxy_set_header X-Original-Method $request_method;
-    }
-
-    location  /collaboration/api/ {
-        # Collaboration server
-        proxy_pass http://y-provider:4444;
-        proxy_set_header Host $host;
-    }
-
     # Proxy auth for media
     location /media/ {
         # Auth request configuration