refactor: 회원의 예약 상세 조회 정보에 예약자 정보 반영

src/main/kotlin/roomescape/reservation/web/ReservationDto.kt

@@ -61,8 +61,23 @@ data class ReservationOverviewListResponse(
     val reservations: List<ReservationOverviewResponse>
 )
 
+data class ReserverInfo(
+    val name: String,
+    val contact: String,
+    val participantCount: Short,
+    val requirement: String
+)
+
+fun ReservationEntity.toReserverInfo() = ReserverInfo(
+    name = this.reserverName,
+    contact = this.reserverContact,
+    participantCount = this.participantCount,
+    requirement = this.requirement
+)
+
 data class ReservationDetailResponse(
     val id: Long,
+    val reserver: ReserverInfo,
     val user: UserContactResponse,
     val applicationDateTime: LocalDateTime,
     val payment: PaymentWithDetailResponse?,
@@ -74,6 +89,7 @@ fun ReservationEntity.toReservationDetailRetrieveResponse(
 ): ReservationDetailResponse {
     return ReservationDetailResponse(
         id = this.id,
+        reserver = this.toReserverInfo(),
         user = user,
         applicationDateTime = this.createdAt,
         payment = payment,