Add network token destination

Author: armando-rodriguez-cko

src/CheckoutSdk/Payments/PaymentDestinationType.cs

@@ -8,5 +8,6 @@ public enum PaymentDestinationType
         [EnumMember(Value = "card")] Card,
         [EnumMember(Value = "id")] Id,
         [EnumMember(Value = "token")] Token,
+        [EnumMember(Value = "network_token")] Networktoken
     }
 }

src/CheckoutSdk/Payments/Request/Destination/PaymentRequestNetworkTokenDestination.cs

@@ -0,0 +1,24 @@
+using Checkout.Payments.Request.Source;
+
+namespace Checkout.Payments.Request.Destination
+{
+    public class PaymentRequestNetworkTokenDestination : PaymentRequestDestination
+    {
+        public PaymentRequestNetworkTokenDestination() : base(PaymentDestinationType.Networktoken)
+        {
+        }
+
+        public string Token { get; set; }
+
+        public int? ExpiryMonth { get; set; }
+
+        public int? ExpiryYear { get; set; }
+
+        public NetworkTokenType TokenType { get; set; }
+
+        public string Cryptogram { get; set; }
+
+        public string Eci { get; set; }
+        
+    }
+}