GitLab

* before running make style

* remove left overs from flake8

* finish

* make fix-copies

* final fix

* more fixes

* init for korean docs

* edit build yml file for multi language docs

* edit one more build yml file for multi language docs

* add title for get_frontmatter error

* fix small typos

* capitalize Diffusers

Add contribution.mdx by copy/pasting and adapting.

* first pass at docs structure

* minor reformatting, add github actions for docs

* populate docs (primarily from README, some writing)