chore: add networks section for vscode service in compose.yaml

Co-authored-by: Copilot <copilot@github.com>

nodes/heimdall/vscode/compose.yaml

@@ -15,6 +15,8 @@ services:
       - PWA_APPNAME=vscode #optional
     volumes:
       - /mnt/appdata/vscode/data:/config
+    networks:
+      - proxy-net
     ports:
       - 8443:8443
     restart: unless-stopped
@@ -25,3 +27,7 @@ services:
       - "traefik.http.routers.vscode.tls=true"
       - "traefik.http.routers.vscode.tls.certresolver=cloudflare"
       - "traefik.http.services.vscode.loadbalancer.server.port=8443"
+
+networks:
+  proxy-net:
+    external: true