static void Main(string[] args)
{
//seed initial data to files on first project build
DataSeed dataSeed = new DataSeed();
dataSeed.SeedStockToFile();
//get data from files
DataService dataService = new DataService();
List <StockItem> stock = dataService.GetStock();
List <MenuItem> menu = dataService.GetMenu();
List <OrderItem> orders = dataService.GetOrders();
// services initialization
StockItemService stockService = new StockItemService(stock);
MenuItemService menuService = new MenuItemService(stock, menu);
OrderItemService orderService = new OrderItemService(stock, menu, orders);
// uncomment bellow method to use it
//stockService.CreateStockItem();
//stockService.UpdateStockItem();
//stockService.RemoveStockItem();
stockService.DisplayStockItems();
//dataService.SaveStock(stock);
//menuService.CreateMenuItem();
menuService.DisplayMenuItems();
//menuService.UpdateMenuItemProducts();
//menuService.UpdateMenuItemName();
//dataService.SaveMenu(menu);
orderService.PlaceNewOrder();
stockService.DisplayStockItems();
menuService.DisplayMenuItems();
orderService.DisplayOrderList();
dataService.SaveStock(stock);
dataService.SaveOrders(orders);
}