* refactor: separate language selection to own widget.
* feat: separate theme changer to own widget.
* refactor: move Appearance UI to separate class.
* refactor: move language selection UI to separate class.
* refactor: move sources selection to separate file.
* refactor: move sources selection to separate file.
* refactor: split settings sections in separate files.
* refactor: move logging section to separate file.
* fix: show toast on bottom.
* fix: recommended patches not being selected by default.
* fix: patch selection selecting non recommended patches.
* fix: experimental toggle not updating.
