Add Blazor WebAssembly Admin Page (#426)

* Added Blazor Client
Configured PublicAPI CORS to allow traffic from client

* Make admin page home page; remove extra pages
Add CatalogType list endpoint

* Wired up Types and Brands in the API and the admin list page

* Adding a custom HttpClient to talk securely to API

* Ardalis/blazor (#419)

* Login added

* AuthService will handel http request secure and not secure.

* Logout added

* CatalogBrandService in it is own service

* Get token from localstorage when refresh.

* used GetAsync

* Fixed Login and Logout switch.

* CatalogItemService added

* CatalogTypeService added & Auth for CatalogType.
using not used removed.

* Made BlazorComponent and BlazorLayoutComponent for refresh.
Index now small enough to be in one file.

* Removed the service from program main and use lazy singleton.

* used OnInitialized

* Refactoring and detecting login status in login.razor

* Refactoring login to redirect if user is already logged in

* Blazor login with MVC (#420)

* Blazor login with MVC

* return back the PasswordSignInAsync in Login page

* CRUD added (#422)

* CRUD added

* Unit Test changed to meet new redirect /admin

* CreateCatalogItemRequest added.

* Action caption added.

* Validation added for name and price.

* Updated port of api
Redirect to returnUrl from login

* Add username to /admin; link to my profile

* Working on authorization of /admin

* Working on custom auth locking down /admin page

* Microsoft authorize working.Login.razor removed.Login from SignInMana… (#425)

* Microsoft authorize working.Login.razor removed.Login from SignInManager and create token from it.unit test fixed.

* GetTokenFromController function used in CustomAuthStateProvider

* Cleaned up button styles
Refactored to use codebehind for List component
Updated Not Authorized view

Co-authored-by: Shady Nagy <shadynagi@gmail.com>

src/PublicApi/Startup.cs

@@ -27,6 +27,7 @@ namespace Microsoft.eShopWeb.PublicApi
 {
     public class Startup
     {
+        private const string CORS_POLICY = "CorsPolicy";
         public Startup(IConfiguration configuration)
         {
             Configuration = configuration;
@@ -120,7 +121,19 @@ namespace Microsoft.eShopWeb.PublicApi
             });
 
 
-
+            services.AddCors(options =>
+            {
+                options.AddPolicy(name: CORS_POLICY,
+                                  builder =>
+                                  {
+                                      builder.WithOrigins("http://localhost:44319",
+                                                          "https://localhost:44319",
+                                                          "http://localhost:44315",
+                                                          "https://localhost:44315");
+                                      builder.AllowAnyMethod();
+                                      builder.AllowAnyHeader();
+                                  });
+            });
 
             services.AddControllers();
             services.AddMediatR(typeof(CatalogItem).Assembly);
@@ -175,6 +188,8 @@ namespace Microsoft.eShopWeb.PublicApi
 
             app.UseRouting();
 
+            app.UseCors(CORS_POLICY);
+
             app.UseAuthorization();
 
             // Enable middleware to serve generated Swagger as a JSON endpoint.