콘텐츠 상세 Response - isOnlyRental(대여만 가능) 추가

src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContent.kt

@@ -35,6 +35,7 @@ data class AudioContent(
     @Enumerated(value = EnumType.STRING)
     val type: AudioContentType = AudioContentType.INDIVIDUAL,
     val isGeneratePreview: Boolean = true,
+    var isOnlyRental: Boolean = false,
     var isAdult: Boolean = false,
     var isCommentAvailable: Boolean = true
 ) : BaseEntity() {