public IActionResult AddItemToShoppingCart(string shoppingCartId, [FromBody] AddItemToShoppingCartDTO dto)
 {
     try
     {
         _shoppingCartManager.AddItemToShoppingCart(shoppingCartId, dto.ItemId);
         return(StatusCode(201));
     }
     catch (Exception ex)
     {
         return(StatusCode(500, new { ErrorMessage = ex.ToString() }));
     }
 }