feat: Implement general contract booking orders functionality

- Add DTOs for creating booking orders and viewing contract quantities.
- Create entities for booking orders and booking order lines.
- Implement service for managing general contract operations, including activation after payment and retrieving quantity lines.
- Develop UI components for contract detail and list pages, including order placement dialog.
- Integrate API service for booking orders, enabling listing and creating orders against contracts.
- Enhance contract status display and quantity pool visualization in the UI.

apps/edr-freight-api/src/modules/scheduling/compare-scheduling-priority.util.ts

@@ -1,7 +1,9 @@
 export interface SchedulingPriorityBooking {
   isGovernment?: boolean;
   priorityScore?: number | null;
-  scheduledDate: Date | string;
+  // One-time bookings always carry a date; general contracts (never scheduled)
+  // may be null — treated as epoch 0 so they sort last.
+  scheduledDate?: Date | string | null;
 }
 
 /** Government first, then priority score, then earliest scheduled date. */
@@ -15,5 +17,7 @@ export function compareSchedulingPriority(
   const priorityDiff = (b.priorityScore ?? 0) - (a.priorityScore ?? 0);
   if (priorityDiff !== 0) return priorityDiff;
 
-  return new Date(a.scheduledDate).getTime() - new Date(b.scheduledDate).getTime();
+  const aTime = a.scheduledDate ? new Date(a.scheduledDate).getTime() : 0;
+  const bTime = b.scheduledDate ? new Date(b.scheduledDate).getTime() : 0;
+  return aTime - bTime;
 }