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04cd6adf - [Feat] add I2VGenXL for image-to-video generation (#6665)

[Feat] add I2VGenXL for image-to-video generation (#6665) --------- Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com> Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com> Co-authored-by: YiYi Xu <yixu310@gmail.com>