why not support baichuan-7b?

[Huangyajuan-123]

[yhyu13]

Here is the instruction on adding new models https://vllm.readthedocs.io/en/latest/models/adding_model.html

I guess it relies on the community to support more models beyond defaults

[zhuohan123]

I believe baichuan-7b is very close to LLaMA and should be easy to add it in vLLM. Please feel free to contribute!