added billValidateByBillId direct method

src/main/java/com/billpaymentservice/bbps/entites/AdditionalInfoBillValidate.java

@@ -0,0 +1,29 @@
+package com.billpaymentservice.bbps.entites;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.Getter;
+import lombok.Setter;
+
+@Entity
+@Table(name = "additional_info_bill_validate")
+@Getter
+@Setter
+public class AdditionalInfoBillValidate {
+	@Id
+    @GeneratedValue
+    private Long id;
+
+    private String name;
+    private String value;
+    // ✅ Many Params → One Bill
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "bill_id_fk")
+    private BillValidation bill;
+
+}