[ControlNet] Adds controlnet for SanaTransformer (#11040)
* added controlnet for sana transformer
* improve code quality
* addressed PR comments
* bug fixes
* added test cases
* update
* added dummy objects
* addressed PR comments
* update
* Forcing update
* add to docs
* code quality
* addressed PR comments
* addressed PR comments
* update
* addressed PR comments
* added proper styling
* update
* Revert "added proper styling"
This reverts commit 344ee8a7014ada095b295034ef84341f03b0e359.
* manually ordered
* Apply suggestions from code review
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Co-authored-by: Aryan <contact.aryanvs@gmail.com>
