feat : 예약 퍼사드 클래스에서 받는 응답 dto 정의

src/main/java/com/prgrms/catchtable/reservation/dto/response/ValidateReservationResponse.java

@@ -0,0 +1,7 @@
+package com.prgrms.catchtable.reservation.dto.response;
+
+import com.prgrms.catchtable.reservation.domain.ReservationTime;
+
+public record ValidateReservationResponse(String shopName, ReservationTime reservationTime) {
+
+}