Add some initial navigation route handlers

Toolkit.Foundation/Extensions/IServiceCollectionExtensions.cs

@@ -1,9 +1,17 @@
-using Microsoft.Extensions.DependencyInjection;
+using Mediator;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
 
 namespace Toolkit.Foundation
 {
     public static class IServiceCollectionExtensions
     {
+        public static IServiceCollection AddHandler<TRequestHandler>(this IServiceCollection serviceCollection)
+        {
+            serviceCollection.TryAdd(new ServiceDescriptor(typeof(TRequestHandler), typeof(TRequestHandler), ServiceLifetime.Transient));
+            return serviceCollection;
+        }
+
         public static IServiceCollection AddFoundation(this IServiceCollection serviceCollection)
         {
             serviceCollection.AddSingleton<IServiceFactory>(provider => new ServiceFactory(provider.GetService, (instanceType, parameters) => ActivatorUtilities.CreateInstance(provider, instanceType, parameters!)));

Toolkit.Foundation/Extensions/IServiceFactoryExtensions.cs

@@ -2,12 +2,7 @@
 {
     public static class IServiceFactoryExtensions
     {
-        public static T? Get<T>(this IServiceFactory serviceFactory)
-        {
-            return serviceFactory.Get<T>(typeof(T));
-        }
-
-        public static T Create<T>(this IServiceFactory serviceFactory, params object?[] parameters)
+        public static T? Create<T>(this IServiceFactory serviceFactory, params object?[] parameters)
         {
             return serviceFactory.Create<T>(typeof(T), parameters);
         }