added initatePayment and checkTxnStatus

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

@@ -0,0 +1,14 @@
+package com.billpaymentservice.bbps.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class CustomerParamDAO {
+    @NotBlank private String paramsId;
+    @NotBlank private String name;
+    @NotBlank private String value;
+    private String type;
+}