Add masterpass validation type to generate token request (#235)

Co-authored-by: Sabri Onur Tüzün <335067+sotuzun@users.noreply.github.com>

Author: onurpolattimur

src/main/java/io/craftgate/model/MasterpassValidationType.java

@@ -0,0 +1,7 @@
+package io.craftgate.model;
+
+public enum MasterpassValidationType {
+    NONE,
+    OTP,
+    THREE_DS
+} 

src/main/java/io/craftgate/request/MasterpassPaymentTokenGenerateRequest.java

@@ -1,6 +1,7 @@
 package io.craftgate.request;
 
 import io.craftgate.model.Loyalty;
+import io.craftgate.model.MasterpassValidationType;
 import io.craftgate.request.dto.MasterpassCreatePayment;
 import lombok.Builder;
 import lombok.Data;
@@ -16,4 +17,5 @@ public class MasterpassPaymentTokenGenerateRequest {
     private MasterpassCreatePayment createPayment;
     private Integer masterpassIntegrationVersion;
     private Loyalty loyalty;
+    private MasterpassValidationType validationType;
 }