라이브 예약 반환 값 - beginDateTimeUtc 추가

src/main/kotlin/kr/co/vividnext/sodalive/live/reservation/LiveReservationService.kt

@@ -83,6 +83,8 @@ class LiveReservationService(
             nickname = room.member!!.nickname,
             title = room.title,
             beginDateString = beginDateTime.format(DateTimeFormatter.ofPattern(reservationDateFormat)),
+            beginDateTimeUtc = room.beginDateTime
+                .format(DateTimeFormatter.ISO_LOCAL_DATE_TIME),
             price = if (room.price > 0) {
                 val priceTemplate = messageSource.getMessage("live.room.can_title", langContext.lang).orEmpty()
                 String.format(priceTemplate, room.price)

src/main/kotlin/kr/co/vividnext/sodalive/live/reservation/MakeLiveReservationResponse.kt

@@ -5,6 +5,7 @@ data class MakeLiveReservationResponse(
     val nickname: String,
     val title: String,
     val beginDateString: String,
+    val beginDateTimeUtc: String,
     val price: String,
     val haveCan: Int,
     val useCan: Int,