Add backwards search to preferences view

- Register keybinding for remove action
- Make other actions as just keybinding actions

- Define keybinding action with keyboard shortcut
- Search keybindings action with keyboard shortcut

- Open default keybindings while opening keybindings file like before

- Use List widget to render keybindings

fixes #22741

fixes #16595

fixes #22624

- Reuse define keybindings widget

Fix terminal color key lookup.

Case preserving but case insensitive file handling

Add ripgrep support