[Feature]: Quantize/save/evaluate the AIDC-AI/Ovis-Image-7B in w4a16 format

[lvliang-intel]

Feature Description

Quantize/save/evaluate the AIDC-AI/Ovis-Image-7B in w4a16 format

Motivation and Use Case

Model: https://huggingface.co/AIDC-AI/Ovis-Image-7B
Target dtypes: w4a16

Save the quantized model for vllm-omni.

Alternatives Considered

No response

Definition of Done

No response

Additional Context

No response