feat: add interactive terminal support for containers via WebSocket

- Implemented WebSocket endpoint for executing interactive shells in Docker containers.
- Added ticket-based authentication for terminal access to enhance security.
- Updated frontend to support terminal interactions, including lazy loading of terminal components.
- Enhanced backend to manage terminal session tickets and settings for enabling/disabling terminal access.
- Updated Nginx configuration to support WebSocket connections for terminal sessions.
- Added necessary dependencies for terminal functionality in the frontend.
- Improved user interface to include terminal access controls and feedback on terminal status.

vps-monitor/frontend/package.json

@@ -9,6 +9,8 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@xterm/addon-fit": "^0.10.0",
+    "@xterm/xterm": "^5.5.0",
     "lucide-react": "^0.396.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1"