add quantity cap for GENERAL contracts and implement capacity tracking

- Updated ContractClearanceService and ContractsController to remove region parameter from queue method.
- Enhanced ContractsRepository to attach contract files for download and added attachContractFiles method.
- Modified ContractsService to persist cargo scope with quantity cap based on contract kind.
- Introduced quantityCap field in CreateContractCargoScopeDto and ContractCargoScope entity.
- Implemented capacity tracking in the frontend with ContractCapacityNotice component to display remaining bookable quantities.
- Updated various components and services to support new capacity features, including hooks and API calls.
- Added migration to include quantity_cap column in contract_cargo_scope table.

apps/edr-freight-web/backoffice/src/hooks/contracts/useContracts.ts

@@ -44,10 +44,10 @@ export function useContractDetail(id: string | undefined) {
   });
 }
 
-export function useContractClearanceQueue(region = "ET", enabled = true) {
+export function useContractClearanceQueue(enabled = true) {
   return useQuery({
-    queryKey: QUERY_KEYS.CONTRACTS.clearanceQueue(region),
-    queryFn: () => contractsService.getClearanceQueue(region),
+    queryKey: QUERY_KEYS.CONTRACTS.clearanceQueue("GL"),
+    queryFn: () => contractsService.getClearanceQueue(),
     enabled,
   });
 }
@@ -69,6 +69,14 @@ export function useContractMilestones(id: string | undefined) {
   });
 }
 
+export function useContractCapacity(id: string | undefined) {
+  return useQuery({
+    queryKey: QUERY_KEYS.CONTRACTS.capacity(id ?? ""),
+    queryFn: () => contractsService.getCapacity(id!),
+    enabled: Boolean(id),
+  });
+}
+
 export function useBookingMilestones(bookingId: string | undefined) {
   return useQuery({
     queryKey: QUERY_KEYS.CONTRACTS.bookingMilestones(bookingId ?? ""),