Created more proper NotFound exceptions

SchengenVisaApi/Infrastructure/Database/GeneralExceptions/EntityNotFoundByIdException.cs

@@ -0,0 +1,10 @@
+using Domains;
+
+namespace Infrastructure.Database.GeneralExceptions
+{
+    /// Exception to throw when entity not found
+    /// <param name="id">Identifier of entity</param>
+    /// <typeparam name="T">Type of entity</typeparam>
+    public class EntityNotFoundByIdException<T>(Guid id) : EntityNotFoundException<T>($"Entity {typeof(T).Name} with id {id} not found.")
+        where T : class, IEntity;
+}