[Feature] New backend for OSS-GPT

[frank-zsy]

Description

I implemented a new backend for OSS-GPT for OpenDigger like the video shows below:

open-digger-qa-bot-720.mov

Anyone can just POST a request to https://chat.hypercrx.cn/open-digger and set the question in body and the request will return data in stream mode.

We can try to replace the old version with this one and in the future, we can use https://chat.hypercrx.cn/{project_name} to answer questions for any project.