Add retry field to cpp and multipayment initialization requests

Author: tuncaserhat

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

@@ -59,4 +59,5 @@ public class InitCheckoutPaymentRequest {
     protected FraudCheckParameters fraudParams;
     protected Map<String, Object> additionalParams;
     protected Map<String, List<CustomInstallment>> cardBrandInstallments;
+    protected Boolean retry;
 }

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

@@ -49,4 +49,5 @@ public class InitMultiPaymentRequest {
     private Long ttl;
     private Integer maximumSplitPaymentCount;
     private Map<String, Object> additionalParams;
+    private Boolean retry;
 }