[Feature]: Native GGUF Quantization Support for DiT (#1285)

Signed-off-by: David Chen <530634352@qq.com>
Signed-off-by: Isotr0py <mozf@mail2.sysu.edu.cn>
Signed-off-by: WeiQing Chen <40507679+david6666666@users.noreply.github.com>
Signed-off-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Co-authored-by: Isotr0py <mozf@mail2.sysu.edu.cn>
Co-authored-by: Isotr0py <2037008807@qq.com>
Co-authored-by: Hongsheng Liu <liuhongsheng4@huawei.com>

docs/user_guide/diffusion/quantization/overview.md

@@ -7,6 +7,7 @@ vLLM-Omni supports quantization of DiT linear layers to reduce memory usage and
 | Method | Guide |
 |--------|-------|
 | FP8 | [FP8](fp8.md) |
+| GGUF | [GGUF](gguf.md) |
 
 ## Device Compatibility