add booking request functionality for GENERAL customs contracts

- Create migration for booking_requests table with necessary fields and indexes.
- Implement BookingRequestRepository for database operations related to booking requests.
- Develop BookingRequestService to handle business logic for submitting, accepting, rejecting, and canceling booking requests.
- Create DTOs for creating booking requests and reviewing them.
- Define BookingRequest entity to map to the booking_requests table.
- Add UI components for managing shipment requests, including detail and list pages.
- Implement OperationDatePicker component for selecting available shipment days.

apps/edr-freight-web/backoffice/src/constants/URLS.ts

@@ -154,6 +154,15 @@ export const URL_CONSTANTS = {
     OPS_CLEARANCE_HISTORY: "/contracts/clearance/ops-history",
     BOOKINGS: (id: string) => `/contracts/${id}/bookings`,
     CAPACITY: (id: string) => `/contracts/${id}/capacity`,
+    // Shipment requests (GENERAL + customs, Path B): customer → GL queue → booking.
+    BOOKING_REQUEST_QUEUE: "/contracts/booking-requests/queue",
+    BOOKING_REQUEST_BY_ID: (reqId: string) =>
+      `/contracts/booking-requests/${reqId}`,
+    BOOKING_REQUESTS: (id: string) => `/contracts/${id}/booking-requests`,
+    BOOKING_REQUEST_ACCEPT: (reqId: string) =>
+      `/contracts/booking-requests/${reqId}/accept`,
+    BOOKING_REQUEST_REJECT: (reqId: string) =>
+      `/contracts/booking-requests/${reqId}/reject`,
     MILESTONES: (id: string) => `/contracts/${id}/milestones`,
     BOOKING_MILESTONES: (bookingId: string) =>
       `/contracts/bookings/${bookingId}/milestones`,
@@ -197,6 +206,7 @@ export const URL_CONSTANTS = {
     ELIGIBLE_BOOKINGS: "/train-scheduling/eligible-bookings",
     BOOKABLE_SCHEDULES: "/train-scheduling/bookable-schedules",
     AVAILABLE_DAYS: "/train-scheduling/available-days",
+    AVAILABLE_DAYS_FOR_CARGO: "/train-scheduling/available-days-for-cargo",
     AVAILABLE_LOCOMOTIVES: "/train-scheduling/available-locomotives",
     BATCH_BOARD: "/train-scheduling/batch-board",
     BATCH_BOARD_DETAIL: (scheduleId: string) =>