cretaed entities for BillerDetail

src/main/java/com/billpaymentservice/bbps/dto/AmountOptionDTO.java

@@ -0,0 +1,12 @@
+package com.billpaymentservice.bbps.dto;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+import java.util.List;
+
+@Getter
+@Setter
+public class AmountOptionDTO{
+   private String amountOptionId;            // Matches "amountOptionId" from JSON
+    private List<String> amountBreakupSets;              // Reference to BillerResponseParams (only ID, not full entity)
+}