implement exchange settings management and fallback rate handling

apps/edr-freight-api/src/modules/warehouses/warehouses.module.ts

@@ -1,8 +1,7 @@
 import { Module, forwardRef } from '@nestjs/common';
-import { ConfigService } from '@nestjs/config';
-import { ExchangeModule, ExchangeOptions } from '@edr/api-common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 
+import { registerExchangeModule } from '../exchange-settings/exchange-module-options';
 import { BillingModule } from '../billing/billing.module';
 import { DocumentsModule } from '../billing/documents/documents.module';
 import { FilesModule } from '../files/files.module';
@@ -78,11 +77,7 @@ import { WarehousesService } from './warehouses.service';
     NotificationsModule,
     NotificationInboxModule,
     SignaturesModule,
-    ExchangeModule.forRootAsync({
-      inject: [ConfigService],
-      useFactory: (config: ConfigService): ExchangeOptions =>
-        config.get<ExchangeOptions>('app.cbeExchange') ?? {},
-    }),
+    registerExchangeModule(),
   ],
   controllers: [
     WarehousesController,