BlazorShared and Services (#430)

* Service to Services

* Change Shared project to BlazorShared

* change refrerances to BlazorShared

src/Web/Controllers/UserController.cs

@@ -3,7 +3,7 @@ using System.Linq;
 using System.Security.Claims;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
-using Shared.Authorization;
+using BlazorShared.Authorization;
 
 namespace Microsoft.eShopWeb.Web.Controllers
 {