public IEnumerable <MenuItem> GetAll()
        {
            MenuItem m1 = new MenuItem()
            {
                Name         = "Pizza",
                FreeDelivery = true,
                Price        = 120,
                DateOfLaunch = new DateTime(2021, 01, 03),
                Active       = true
            };
            MenuItem m2 = new MenuItem()
            {
                Name         = "Burger",
                FreeDelivery = true,
                Price        = 80,
                DateOfLaunch = new DateTime(2021, 04, 03),
                Active       = true
            };

            _context.Add(m1);
            _context.Add(m2);
            _context.SaveChanges();

            return(_context.MenuItems.ToList());
        }