first time include all file

CarParkValidationAPI/Entities/ApiException.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace CarParkValidationAPI.Entities
+{
+    public class ApiException
+    {
+        public ApiException(int statusCode, string message = null, string details = null)
+        {
+            StatusCode = statusCode;
+            Message = message;
+            Details = details;
+        }
+
+        public int StatusCode { get; set; }
+        public string Message { get; set; }
+        public string Details { get; set; }
+    }
+}