[core] Move community AnimateDiff ControlNet to core (#8972)
* add animatediff controlnet to core
* make style; remove unused method
* fix copied from comment
* add tests
* changes to make tests work
* add utility function to load videos
* update docs
* update pipeline example
* make style
* update docs with example
* address review comments
* add latest freeinit test from #8969
* LoraLoaderMixin -> StableDiffusionLoraLoaderMixin
* fix docs
* Update src/diffusers/utils/loading_utils.py
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>
* fix: variable out of scope
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Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>
