hefty: bar: add power button widget

dots/.config/quickshell/ii/modules/hefty/topLayer/bar/widgets/HPowerButton.qml

@@ -0,0 +1,27 @@
+pragma ComponentBehavior: Bound
+import QtQuick
+
+import qs
+import qs.modules.common.widgets
+import ".."
+
+HBarWidgetWithPopout {
+    id: root
+
+    HBarWidgetContent {
+        id: contentRoot
+        vertical: root.vertical
+        atBottom: root.atBottom
+        contentImplicitWidth: symbol.implicitWidth
+        contentImplicitHeight: symbol.implicitHeight
+        showPopup: false
+        onClicked: GlobalStates.sessionOpen = true;
+
+        MaterialSymbol {
+            id: symbol
+            anchors.centerIn: parent
+            iconSize: 20
+            text: "power_settings_new"
+        }
+    }
+}