Update mnigets

Toolkit.WinUI/IServiceCollectionExtensions.cs

@@ -0,0 +1,18 @@
+using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Toolkit.Foundation;
+
+namespace Toolkit.WinUI;
+
+public static class IServiceCollectionExtensions
+{
+    public static IServiceCollection AddWinUI(this IServiceCollection services)
+    {
+        services.AddTransient<IDispatcherTimerFactory, DispatcherTimerFactory>();
+        return services;
+    }
+}