feat(desktop-widgets): Added a way to move the DesktopSettingsDialog popup by dragging

Modules/Panels/Settings/DesktopWidgets/DesktopWidgetSettingsDialog.qml

@@ -136,6 +136,40 @@ Popup {
     }
   }
 
+  // Mouse area for a draggable popup
+  MouseArea {
+    x: titleRow.x
+    y: titleRow.y
+    width: titleRow.width
+    height: titleRow.height
+    z: -1
+
+    cursorShape: Qt.OpenHandCursor
+
+    property real pressX: 0
+    property real pressY: 0
+
+    onPressed: (mouse) => {
+      pressX = mouse.x;
+      pressY = mouse.y;
+      cursorShape = Qt.ClosedHandCursor
+    }
+
+    onReleased: {
+      cursorShape = Qt.OpenHandCursor
+    }
+
+    onPositionChanged: (mouse) => {
+      if (pressed) {
+        var deltaX = mouse.x - pressX;
+        var deltaY = mouse.y - pressY;
+
+        root.x += deltaX;
+        root.y += deltaY;
+      }
+    }
+  }
+
   Timer {
     id: saveTimer
     running: false