✨(backend) add subrequest auth view for collaboration server

We need to improve security on the access to The collaboration server
We can use the same pattern as for media files leveraging the nginx
subrequest feature.

docker/files/etc/nginx/conf.d/default.conf

@@ -4,6 +4,49 @@ 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;
+    }
+
+    # Proxy auth for media
     location /media/ {
         # Auth request configuration
         auth_request /media-auth;