Consider Building UI on ADK Web Instead of Rewriting Communication Code

https://github.com/deepmodeling/build-your-agent/blob/401798b59078b8544ee1abc98898eccf2f540d81/agents/adk_ui_starter/websocket-server.py#L298

The current frontend-backend communication code seems to have issues, particularly in handling artifact data from the backend ADK.
Completely rewriting the communication code from scratch feels like reinventing the wheel. Why not simply build upon the existing [ADK Web ](https://github.com/google/adk-web)framework? Their implementation already handles all the communication logic - we would only need to modify the frontend design.