fully support llm-compressor export

[lkk12014402]

fully support llm-compressor export (mxfp4/nvfp4/W8A8-INT8), need support more schemes like W4A16-INT4

[xin3he]

@WeiweiZhang1. @wenhuach21 @n1ck-guo I assume this should be high-priority, right?
We plan to claim that we have a good support for the llm-compressor format.