feat: implement consolidation approval process for shared-wagon bookings

- Add migration for consolidation approvals table and status enum
- Create ConsolidationApprovalService to handle approval logic
- Implement repository for managing consolidation approvals
- Add entity for consolidation approval with necessary fields
- Develop frontend components for displaying and managing consolidation approvals
- Create tests for consolidation approval service to ensure correct behavior

apps/edr-freight-api/src/modules/contracts/contract-booking.completion.spec.ts

@@ -30,6 +30,7 @@ describe('ContractBookingService — quantity-cap completion', () => {
       {} as never, // trainSchedulingService
       {} as never, // bookingBatchService
       {} as never, // bookingTransitionService
+      {} as never, // consolidationApprovalService
     );
     return { service, contractsRepository };
   }
@@ -156,6 +157,7 @@ describe('ContractBookingService — quantity-cap completion', () => {
         {} as never,
         {} as never,
         {} as never,
+        {} as never, // consolidationApprovalService
       );
       return { service, contractsRepository };
     }