Properties window is now shown near mouse cursor position

Author: IgorKordiukiewicz

src/Files.Uwp/Helpers/FilePropertiesHelpers.cs

@@ -77,6 +77,11 @@ public static async Task OpenPropertiesWindowAsync(object item, IShellPage assoc
                     appWindow.PersistedStateId = "Properties";
                     WindowManagementPreview.SetPreferredMinSize(appWindow, new Size(460, 550));
 
+                    DisplayRegion displayRegion = ApplicationView.GetForCurrentView().GetDisplayRegions()[0];
+                    Point pointerPosition = CoreWindow.GetForCurrentThread().PointerPosition;
+                    appWindow.RequestMoveRelativeToDisplayRegion(displayRegion,
+                        new Point(pointerPosition.X - displayRegion.WorkAreaOffset.X, pointerPosition.Y - displayRegion.WorkAreaOffset.Y));
+
                     bool windowShown = await appWindow.TryShowAsync();
                     if (windowShown)
                     {