Keyhint

- Revert pygobject version bump to stay compatible with Ubuntu 22.04 LTS

- Slightly speed up startup
- Fix potential error when window titles contain single quotes
- Extend vscode cheatsheet
- View bindings a bit more compact

- Add shortcuts `Ctrl + Up`/`Down` to switch to next/previous cheatsheet:

- Add cheatsheet for Alacritty.
- Changed `cli` cheatsheet to hidden by default.
- Renamed browser- and vscode-extension cheatsheets.

- Fix support for older version of `libadwaita`.
- Add cheatsheet for GH copilot.

- Breaking changes:
- Renamed the attribute `regex_process` in `toml`-files to `regex_wmclass`.
- Renamed the attribute `source` in `toml`-files to `url`.
- Removed cli-args which are now covered by settings menu.
- Fix duplicate IDs in included sections.
- Add settings menu to ui.
- Add Support KDE + Wayland.
- Focus search field on start.
- Cheatsheets:
- Moved some CLI commands into separate cheatsheet and include it in terminal apps.
- Added sheet for Keyhint itself.