feat: Implement consolidated booking functionality

- Added support for viewing and managing consolidated bookings in BookingRequestDetailPage.
- Enhanced BookingRequestsPage to display paired bookings in a single row.
- Introduced pairedDecision method in bookings service to handle decisions for both halves of a consolidated pair.
- Updated contracts service to include methods for manual consolidation of odd-20ft bookings.
- Created new components for selecting and editing consolidation partners.
- Added tests for paired decision logic and manual consolidation scenarios.
- Updated UI to reflect changes in booking handling and provide user feedback for odd container counts.

apps/edr-freight-web/backoffice/src/features/bookings/booking-actions.config.ts

@@ -59,6 +59,9 @@ export type BookingActionContext = Pick<
   | "reference"
   | "schedulingStatus"
   | "customsClearingEnabled"
+  // Set when this booking shares a wagon: the pairable staff decisions then
+  // apply to both halves at once rather than to this booking alone.
+  | "consolidationPartnerId"
 >;
 
 const ALLOCATABLE_SCHEDULING_STATUSES = new Set([