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/billing/billing.module.ts

@@ -19,7 +19,8 @@ import { FilesModule } from "../files/files.module";
   imports: [
     TypeOrmModule.forFeature([Invoice, InvoiceLine]),
     forwardRef(() => PaymentModule),
-    CompaniesModule,
+    // Cycles back via ShippingLineCompaniesModule, which imports this module.
+    forwardRef(() => CompaniesModule),
     DocumentsModule,
     UserTradeAccessModule,
     FilesModule,
@@ -29,3 +30,4 @@ import { FilesModule } from "../files/files.module";
   exports: [BillingService],
 })
 export class BillingModule {}
+