adding admin exists api

API/Controllers/AdminController.cs

@@ -0,0 +1,24 @@
+using System.Threading.Tasks;
+using API.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace API.Controllers
+{
+    public class AdminController : BaseApiController
+    {
+        private readonly IUserRepository _userRepository;
+
+        public AdminController(IUserRepository userRepository)
+        {
+            _userRepository = userRepository;
+        }
+
+        [HttpGet]
+        public async Task<ActionResult<bool>> AdminExists()
+        {
+            return await _userRepository.AdminExists();
+        }
+        
+        
+    }
+}