GitLab

* Reorganize doc for multilingual support

* Fix style

* Style

* Toc trees

* Adapt templates

* Big file_utils cleanup

* This one still needs to be treated separately

* Fix bad examples

* Add black formatting to style_doc

* Use first nonempty line

* Put it at the right place

* Don't add spaces to empty lines

* Better templates

* Deal with triple quotes in docstrings

* Result of style_doc

* Enable mdx treatment and fix code examples in MDXs

* Result of doc styler on doc source files

* Last fixes

* Break copy from

* Convert all tutorials and guides

* Convert all remaining rst to mdx

* Track and fix bad links