오디션 투표 API

- 투표시 어떤 오디션 지원에 투표했는지 기록
- 캔 사용내역에 "[오디션 투표] 닉네임" 추가

src/main/kotlin/kr/co/vividnext/sodalive/can/payment/CanPaymentService.kt

@@ -103,6 +103,7 @@ class CanPaymentService(
         } else if (canUsage == CanUsage.ALARM_SLOT) {
             useCan.member = member
         } else if (canUsage == CanUsage.AUDITION_VOTE && auditionApplicant != null) {
+            useCan.auditionApplicant = auditionApplicant
             useCan.member = member
         } else if (canUsage == CanUsage.HEART && liveRoom != null) {
             recipientId = liveRoom.member!!.id!!