feat: implement shipping line bookings management

- Add ShippingLineBookingsPage for listing and managing shipping line bookings.
- Create ShippingLineDocumentsModal for document uploads related to bookings.
- Introduce ShippingLineInitiateModal for initiating new shipping line bookings.
- Implement booking document state management with booking-doc-state utility.
- Add shipping line bookings service for API interactions.
- Update index to export new components and services.
- Enhance types for freight to include shipping line credits.

apps/edr-freight-api/src/modules/rule-engine/services/rates.duplicate-pattern.spec.ts

@@ -61,6 +61,8 @@ describe('RatesService — one rate per pattern', () => {
         })),
       } as never,
       { findById: jest.fn().mockResolvedValue(null) } as never,
+      // Shipping line companies — these rates carry no owner, so it is never hit.
+      { findById: jest.fn() } as never,
     );
   });