refactor: Audit 관련 DTO 별도 클래스 분리

src/main/kotlin/roomescape/common/dto/AuditDto.kt

@@ -0,0 +1,22 @@
+package roomescape.common.dto
+
+import java.time.LocalDateTime
+
+object AuditConstant {
+    val UNKNOWN_OPERATOR = OperatorInfo(
+        id = 0,
+        name = "unknown"
+    )
+}
+
+data class OperatorInfo(
+    val id: Long,
+    val name: String,
+)
+
+data class AuditInfo(
+    val createdAt: LocalDateTime,
+    val createdBy: OperatorInfo,
+    val modifiedAt: LocalDateTime,
+    val modifiedBy: OperatorInfo,
+)

src/main/kotlin/roomescape/common/dto/CommonAuth.kt

@@ -64,11 +64,6 @@ enum class PrincipalType {
     USER, ADMIN
 }
 
-data class OperatorInfo(
-    val id: Long,
-    val name: String
-)
-
 data class CurrentUserContext(
     val id: Long,
     val name: String,