Add Stable Diffusion RePaint to community pipelines (#3320)
* Add Stable Diffsuion RePaint to community pipelines
- Adds Stable Diffsuion RePaint to community pipelines
- Add Readme enty for pipeline
* Fix: Remove wrong import
- Remove wrong import
- Minor change in comments
* Fix: Code formatting of stable_diffusion_repaint
* Fix: ruff errors in stable_diffusion_repaint
