Add EasyAnimateV5.1 text-to-video, image-to-video, control-to-video generation model (#10626)
* Update EasyAnimate V5.1
* Add docs && add tests && Fix comments problems in transformer3d and vae
* delete comments and remove useless import
* delete process
* Update EXAMPLE_DOC_STRING
* rename transformer file
* make fix-copies
* make style
* refactor pt. 1
* update toctree.yml
* add model tests
* Update layer_norm for norm_added_q and norm_added_k in Attention
* Fix processor problem
* refactor vae
* Fix problem in comments
* refactor tiling; remove einops dependency
* fix docs path
* make fix-copies
* Update src/diffusers/pipelines/easyanimate/pipeline_easyanimate_control.py
* update _toctree.yml
* fix test
* update
* update
* update
* make fix-copies
* fix tests
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Co-authored-by: Aryan <aryan@huggingface.co>
Co-authored-by: Aryan <contact.aryanvs@gmail.com>
Co-authored-by: YiYi Xu <yixu310@gmail.com>
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>