#1 - Feat: Add User VOs, Error Constant

src/main/java/org/routemaster/api/auth/domain/user/impl/exception/UserErrorCode.java

@@ -0,0 +1,22 @@
+package org.routemaster.api.auth.domain.user.impl.exception;
+
+public class UserErrorCode {
+
+    /**
+     * <p>ROE_100</p>
+     * Passing invalid parameters when requesting user domains
+     */
+    public static final String ROE_100 = "ROE_100";
+
+    /**
+     * <p>ROE_101</p>
+     * When user-related entity cannot be found
+     */
+    public static final String ROE_101 = "ROE_101";
+
+    /**
+     * <p>ROE_102</p>
+     * Incorrect security related to the user's domain
+     */
+    public static final String ROE_102 = "ROE_102";
+}

src/main/java/org/routemaster/api/auth/endpoint/user/info/profile/impl/vo/response/UserNicknameListResponse.java

@@ -0,0 +1,16 @@
+package org.routemaster.api.auth.endpoint.user.info.profile.impl.vo.response;
+
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+@Getter
+public class UserNicknameListResponse {
+
+    private List<UserNicknameResponse> nicknames;
+}

src/main/java/org/routemaster/api/auth/endpoint/user/info/profile/impl/vo/response/UserNicknameResponse.java

@@ -0,0 +1,17 @@
+package org.routemaster.api.auth.endpoint.user.info.profile.impl.vo.response;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+@Getter
+public class UserNicknameResponse {
+
+    private String id;
+    private String baseUserId;
+    private String nickname;
+}