added login with otp ,verify otp and registred user

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

@@ -35,7 +35,14 @@ public class UserEntity extends Auditable<String> {
     private String email;
     
     @Column(name = "age")
-    private int age;
+    private String age;
+    
+    public UserEntity(String mobile, String name, String email, String age) {
+        this.mobile = mobile;
+        this.name = name;
+        this.email = email;
+        this.age = age;
+    }