Refactored AgeGroup namespace and services, added RegistrationKey functionality.

API/Controllers/RegistrationKeyController.cs

@@ -0,0 +1,21 @@
+using API.Repository.RegistrationKeyRepo;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+
+namespace API.Controllers;
+
+[ApiController]
+[Route("api/registrationKey")]
+public class RegistrationKeyController : ControllerBase
+{
+    private IRegistrationKeyService _keyService;
+    private readonly RoleManager<IdentityRole> _roleManager;
+
+    public RegistrationKeyController(IRegistrationKeyService keyService, RoleManager<IdentityRole> roleManager)
+    {
+        _keyService = keyService;
+        _roleManager = roleManager;
+    }
+
+
+}