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/constants/URLS.ts

@@ -150,6 +150,7 @@ export const URL_CONSTANTS = {
     OPS_CLEARANCE_FINALIZE: (id: string) =>
       `/contracts/${id}/clearance/ops-finalize`,
     BOOKINGS: (id: string) => `/contracts/${id}/bookings`,
+    CAPACITY: (id: string) => `/contracts/${id}/capacity`,
     MILESTONES: (id: string) => `/contracts/${id}/milestones`,
     BOOKING_MILESTONES: (bookingId: string) =>
       `/contracts/bookings/${bookingId}/milestones`,