Add auth using

Author: russdaygh

PocketDDD.Server/PocketDDD.Server.WebAPI/Controllers/RegistrationController.cs

@@ -1,4 +1,5 @@
-using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using PocketDDD.Server.Model.DTOs;
 using PocketDDD.Server.Services;