add slide-in applet dock with collapsible cards, edge trigger, and bar module toggle

shell/modules/Bar.qml

@@ -216,10 +216,13 @@ PanelWindow {
                 }
             }
 
-            // Power
+            // Power + Dock
             M.BarGroup {
                 rightEdge: true
                 M.BatteryModule {}
+                M.DockModule {
+                    visible: S.Modules.dock.enable
+                }
                 M.PowerModule {
                     visible: S.Modules.power.enable
                 }

shell/modules/DockModule.qml

@@ -0,0 +1,15 @@
+import QtQuick
+import "." as M
+import "../services" as S
+import "../dock" as D
+
+M.BarModule {
+    id: root
+    tooltip: D.DockState.open ? "Close dock" : "Open dock"
+    onTapped: D.DockState.toggle()
+
+    M.BarIcon {
+        icon: D.DockState.open ? "\uDB80\uDD8B" : "\uDB80\uDD89"
+        anchors.verticalCenter: parent.verticalCenter
+    }
+}

shell/modules/qmldir

@@ -12,6 +12,7 @@ BluetoothModule 1.0 BluetoothModule.qml
 ClockModule 1.0 ClockModule.qml
 CpuModule 1.0 CpuModule.qml
 DiskModule 1.0 DiskModule.qml
+DockModule 1.0 DockModule.qml
 GpuModule 1.0 GpuModule.qml
 HoverPanel 1.0 HoverPanel.qml
 IdleInhibitorModule 1.0 IdleInhibitorModule.qml