GitLab

* Remove conversion to RGB

* Add a Conversion Function

* Add type hint for convert_method

* Update src/diffusers/utils/loading_utils.py

Update docstring
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>

* Update docstring

* Optimize imports

* Optimize imports (2)

* Reformat code

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Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>