Add keyvault operations and models (#1838)

Co-authored-by: stas <statis@microsoft.com>

src/ApiService/ApiService/Program.cs

@@ -82,15 +82,18 @@ public class Program
             .AddScoped<IReports, Reports>()
             .AddScoped<INotificationOperations, NotificationOperations>()
             .AddScoped<IUserCredentials, UserCredentials>()
-
+            .AddScoped<ISecretsOperations, SecretsOperations>()
 
             //Move out expensive resources into separate class, and add those as Singleton
             // ArmClient, Table Client(s), Queue Client(s), HttpClient, etc.
             .AddSingleton<ICreds, Creds>()
             .AddSingleton<IServiceConfig, ServiceConfiguration>()
+            .AddHttpClient()
         )
         .Build();
 
         host.Run();
     }
+
+
 }