copy and paste service-a for add cqrs design

src/main/java/com/example/mmad/testapp/command/CreateUserCommand.java

@@ -0,0 +1,13 @@
+package com.example.mmad.testapp.command;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class CreateUserCommand {
+
+    private Long userId;
+    private String userName;
+    private String email;
+}