Admin controller, Locations controller, requests to add available countries, request to get available countries

SchengenVisaApi/Infrastructure/Database/GeneralExceptions/EntityNotFoundException.cs

@@ -1,8 +1,9 @@
-using Domains;
+using ApplicationLayer.GeneralExceptions;
+using Domains;
 
 namespace Infrastructure.Database.GeneralExceptions;
 
 /// Exception to throw when entity not found
 /// <typeparam name="T">Not found entity type</typeparam>
-public class EntityNotFoundException<T>(string message) : Exception(message)
+public class EntityNotFoundException<T>(string message) : ApiException(message)
     where T : class, IEntity;