Add Booking System

packages/database/prisma/schema/booking.prisma

@@ -0,0 +1,26 @@
+enum BOOKING_TYPE {
+    STATION
+    LST_01
+    LST_02
+    LST_03
+    LST_04
+}
+
+model Booking {
+    id        String       @id @default(uuid())
+    userId    String       @map(name: "user_id")
+    type      BOOKING_TYPE
+    stationId Int?         @map(name: "station_id")
+    startTime DateTime     @map(name: "start_time")
+    endTime   DateTime     @map(name: "end_time")
+    createdAt DateTime     @default(now()) @map(name: "created_at")
+    updatedAt DateTime     @updatedAt @map(name: "updated_at")
+
+    // Relations
+    user    User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+    station Station? @relation(fields: [stationId], references: [id], onDelete: Cascade)
+
+    @@index([startTime, endTime])
+    @@index([type, startTime, endTime])
+    @@map(name: "bookings")
+}