i18n: WIP initial RTL support

- notifications
- color picker
- process list
- settings
- control center, dash
- launcher

part of #1059

quickshell/Modules/DankDash/MediaPlayerTab.qml

@@ -10,6 +10,9 @@ import qs.Widgets
 Item {
     id: root
 
+    LayoutMirroring.enabled: I18n.isRtl
+    LayoutMirroring.childrenInherit: true
+
     property MprisPlayer activePlayer: MprisController.activePlayer
     property var allPlayers: MprisController.availablePlayers
     property var targetScreen: null