Refactor Sample Gallery App

Author: ghost1372

dev/DevWinUI.Controls/Themes/Generic.xaml

@@ -11,3 +11,4 @@
 global using Microsoft.UI.Xaml.Navigation;
 global using static DevWinUIGallery.Common.AppHelper;
 global using static DevWinUIGallery.Common.LoggerSetup;
+global using System.Collections.ObjectModel;

dev/DevWinUI.Gallery/Assets/Others/p1.jpg dev/DevWinUI.Gallery/Assets/Profile/1.jpgdev/DevWinUI.Gallery/Assets/Others/p1.jpg renamed to dev/DevWinUI.Gallery/Assets/Profile/1.jpg

@@ -0,0 +1,7 @@
+namespace DevWinUIGallery.Models;
+
+public partial class CarouselItemSource : ICarouselViewItemSource
+{
+    public string ImageSource { get; set; }
+    public string Title { get; set; }
+}