Move logic out the the class libs

PointOfSale/Pos.Models/Json/BodyModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Pos.Json
+{
+    public class BodyModel
+    {
+        public ProductModel[] products { get; set; } = Array.Empty<ProductModel>();
+        public float totalPrice { get; set; }
+        public float totalVat { get; set; }
+        public int receiptNumber { get; set; }
+        public string receiptTime { get; set; } = string.Empty;
+        public string staff { get; set; } = string.Empty;
+    }
+}