private void ItemsButton_Click(object sender, RoutedEventArgs e)
        {
            var littleShop = new LittleShop();

            var items = littleShop.GetShopItems();

            for (int i = 0; i < items.Count; i++)
            {
                ItemsList.Items.Add(items[i]);
            }

            ItemsList.Items.Add("--------");
            ItemsList.Items.Add($"Item Count: {items.Count}");
            ItemsList.Items.Add($"Capacity: {items.Capacity}");
        }
        private void FruitsButton_Click(object sender, RoutedEventArgs e)
        {
            var littleShop = new LittleShop();

            var fruits = littleShop.GetFruitsList();

            foreach (var fruit in fruits)
            {
                FruitsList.Items.Add(fruit);
            }

            FruitsList.Items.Add("--------");
            FruitsList.Items.Add($"Item Count: {fruits.Count}");
            FruitsList.Items.Add($"Capacity: {fruits.Capacity}");
        }