Bar widgets: modular loading refactoring via BarWidgetRegistry+NWidgetLoader

- Hot reload is working again.
- Should also be more memory efficient on multi monitors.

Modules/Bar/Widgets/ScreenRecorderIndicator.qml

@@ -1,18 +1,21 @@
+import Quickshell
 import qs.Commons
 import qs.Services
 import qs.Widgets
 
 // Screen Recording Indicator
 NIconButton {
-  id: screenRecordingIndicator
+  id: root
+
+  property ShellScreen screen
+  property real scaling: ScalingService.scale(screen)
+
+  visible: ScreenRecorderService.isRecording
   icon: "videocam"
   tooltipText: "Screen Recording Active\nClick To Stop Recording"
   sizeMultiplier: 0.8
   colorBg: Color.mPrimary
   colorFg: Color.mOnPrimary
-  visible: ScreenRecorderService.isRecording
   anchors.verticalCenter: parent.verticalCenter
-  onClicked: {
-    ScreenRecorderService.toggleRecording()
-  }
+  onClicked: ScreenRecorderService.toggleRecording()
 }