Add draft for lora text encoder scale (#3626)
* Add draft for lora text encoder scale
* Improve naming
* fix: training dreambooth lora script.
* Apply suggestions from code review
* Update examples/dreambooth/train_dreambooth_lora.py
* Apply suggestions from code review
* Apply suggestions from code review
* add lora mixin when fit
* add lora mixin when fit
* add lora mixin when fit
* fix more
* fix more
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Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>