static void Main(string[] args)
        {
            var jsonData = File.ReadAllText("Data.json");
            var data     = JsonSerializer.Deserialize <List <Item> >(jsonData);

            var itemProcessor = new ItemProcessor(data);

            itemProcessor.ProcessItems();

            foreach (var item in data)
            {
                System.Console.WriteLine($"{item.Name} {item.SellIn} {item.Quality}");
            }
            System.Console.ReadKey();
        }