增加Mediat Pip特性，并用实例来做一个demo

Modules/Store.Users/Startup.cs

@@ -1,4 +1,7 @@
-using MAX.Core.DependencyInjection;
+using MediatR;
+using Store.Users.Commands;
+using Store.Users.Contracts.Dtos;
+using MAX.Core.DependencyInjection;
 using MAX.Core.Interfaces;
 
 namespace Store.Users
@@ -13,6 +16,7 @@ namespace Store.Users
 
 		public void Register(IServiceRegistrar registrar)
 		{
+            registrar.RegisterTransient<IRequestHandler<ShopRenewCommand, ShopRenewResponse>, ShopRenewCommandHandler>();
 		}
 
 		public void Start(IServiceProvider serviceProvider)