refactor: 각 도메인 동일한 예외 형식을 유지하도록 ErrorCode 인터페이스 도입

src/main/java/depromeet/onepiece/common/error/ErrorCode.java

@@ -0,0 +1,11 @@
+package depromeet.onepiece.common.error;
+
+import org.springframework.http.HttpStatus;
+
+public interface ErrorCode {
+  HttpStatus getStatus();
+
+  String getCode();
+
+  String getMessage();
+}

src/main/java/depromeet/onepiece/common/error/GlobalErrorCode.java

@@ -6,7 +6,7 @@
 
 @Getter
 @AllArgsConstructor
-public enum GlobalErrorCode {
+public enum GlobalErrorCode implements ErrorCode {
   // 공통
   SUCCESS(HttpStatus.OK, "G000", "요청에 성공했습니다."),
   OTHER(HttpStatus.INTERNAL_SERVER_ERROR, "G100", "서버에 오류가 발생했습니다"),

src/main/java/depromeet/onepiece/common/error/GlobalException.java

@@ -6,8 +6,8 @@
 public class GlobalException extends RuntimeException {
   @Getter private final GlobalErrorCode errorCode;
 
-  public GlobalException(String message, GlobalErrorCode errorCode) {
+  public GlobalException(String message, ErrorCode errorCode) {
     super(message);
-    this.errorCode = errorCode;
+    this.errorCode = (GlobalErrorCode) errorCode;
   }
 }