[Feature] Support XTuner Lite Llava

[pppppM]

In XTuner Lite, some modifications were made to HF Llava to support the LLM part which is remote code. As a result, the saved HF Llava model needs to be loaded using AutoModel.

https://github.com/pppppM/xtuner/tree/lite/xtuner/_lite/modelings/llava