i18n: WIP initial RTL support

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

part of #1059

quickshell/Modules/Notifications/Center/NotificationCenterPopout.qml

@@ -100,6 +100,9 @@ DankPopout {
         Rectangle {
             id: notificationContent
 
+            LayoutMirroring.enabled: I18n.isRtl
+            LayoutMirroring.childrenInherit: true
+
             property var externalKeyboardController: null
             property real cachedHeaderHeight: 32