BackOffice! now just for API_KEY.

BackOffice! now just for API_KEY.
However after, we could using it with Model controller.

I think we could make Json serialized team from AutoGen Studio, and adding autogen-oaiapi.
> Just future. I need to someone FE developer. haha.

So, First of this task,
We could using FastAPI-Admin.
> Just current opinion.

blocked by #23 