[Community] AnimateDiff + Controlnet Pipeline (#5928)
* begin work on animatediff + controlnet pipeline
* complete todos, uncomment multicontrolnet, input checks
Co-Authored-By: EdoardoBotta <botta.edoardo@gmail.com>
* update
Co-Authored-By: EdoardoBotta <botta.edoardo@gmail.com>
* add example
* update community README
* Update examples/community/README.md
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Co-authored-by: EdoardoBotta <botta.edoardo@gmail.com>
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
