* LLMGroundedDiffusionPipeline: inherit from DiffusionPipeline and fix peft
* Use main in the revision in the examples
* Add "Copied from" statements in comments
* Fix formatting with ruff
* make `requires_safety_checker` a kwarg instead of a positional argument as it's more future-proof
* apply `make style` formatting edits
* add image_encoder to arguments and pass to super constructor
* Fix the pipeline name in the examples for LMD+ pipeline
* Add LMD+ colab link
* Apply code formatting
---------
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Long(Tony) Lian