Add mocked broker client

Hcs.WebApp/Program.cs

@@ -1,5 +1,6 @@
 using Hcs.WebApp.Components;
 using Hcs.WebApp.Data;
+using Hcs.WebApp.Services;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
 using Radzen;
@@ -34,6 +35,12 @@ builder.Services
     .AddEntityFrameworkStores<AppIdentityDbContext>()
     .AddDefaultTokenProviders();
 
+#if USE_MOCK
+builder.Services.AddTransient<IClientProvider, MockClientProvider>();
+#else
+builder.Services.AddTransient<IClientProvider, ClientProvider>();
+#endif
+
 var app = builder.Build();
 
 if (!app.Environment.IsDevelopment())