Generate automatic CLI interface documentation with mkdocs-click
## Todos
- [x] Integrate [`mkdocs-click`](https://github.com/mkdocs/mkdocs-click)
- [x] Found a bug in v0.9.0: https://github.com/mkdocs/mkdocs-click/pull/87, using v0.8.1 until `rich-click` v1.9.0 is released.
- [x] `attr_list` should be positioned before `mkdocs-click`: https://github.com/mkdocs/mkdocs-click/pull/88
- [x] `mdformat` reformatting `docs/usage/cli.md`: add exclusion
- [x] Improve and update CLI commands, and arguments descriptions to better bit both the CLI and website
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