Refactor entities into domain project

StockDomain/Product.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StockDomain
+{
+    public class Product
+    {
+        public string ProductId { get; set; }
+        public string ProductName { get; set; }
+        public decimal UnitPrice { get; set; }
+        public string Barcode { get; set; }
+        public int UnitsInStock { get; set; }
+    }
+}