Feature Request: Support for GAIR/daVinci-MagiHuman (text-image-audio → video)

### Feature Idea

Hi, I’d like to request support for the daVinci-MagiHuman model:

https://huggingface.co/GAIR/daVinci-MagiHuman

This model is quite unique:
- unified multimodal generation (text + image + audio → video)
- single-stream Transformer architecture
- supports audio-driven video generation

It would be a great addition to ComfyUI’s ecosystem, especially for:
- talking head generation
- audio-driven animation
- multimodal video workflows

### Existing Solutions

_No response_

### Other

_No response_