Add QwenImage Inpainting and Img2Img pipeline (#12117)
* feat/qwenimage-img2img-inpaint
* Update qwenimage.md to reflect new pipelines and add # Copied from convention
* tiny fix for passing ruff check
* reformat code
* fix copied from statement
* fix copied from statement
* copy and style fix
* fix dummies
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Co-authored-by: TuanNT-ZenAI <tuannt.zenai@gmail.com>
Co-authored-by: DN6 <dhruv.nair@gmail.com>
