GitLab

* allow hunyuan dit to run under 6GB for GPU VRAM

* add section in the docs/

minor docs changes in hunyuandit

* Hunyuan Team: add HunyuanDiT related updates


---------
Co-authored-by: XCLiu <liuxc1996@gmail.com>
Co-authored-by: yiyixuxu <yixu310@gmail.com>