Add freight demo data seeder and permissions management

- Introduced `DemoFreightDataSeeder` to seed demo freight data including wagons, approval rules, and staff users.
- Added `seed:freight-demo` script to `package.json` for easy execution.
- Updated permissions for operations officer and added permission checks in various components.
- Enhanced sidebar and booking actions to respect user permissions.

apps/edr-freight-api/src/scripts/seed-freight-demo.ts

@@ -0,0 +1,28 @@
+import 'reflect-metadata';
+import { config } from 'dotenv';
+import { resolve } from 'path';
+
+config({ path: resolve(__dirname, '../../.env') });
+
+import { NestFactory } from '@nestjs/core';
+import { AppModule } from '../app.module';
+import { DemoFreightDataSeeder } from '../seed/demo-freight-data.seeder';
+
+async function main() {
+  const app = await NestFactory.createApplicationContext(AppModule, {
+    logger: ['error', 'warn', 'log'],
+  });
+
+  try {
+    const seeder = app.get(DemoFreightDataSeeder);
+    await seeder.run();
+    console.log('Freight demo data seeded (wagons, approval rules, staff users).');
+  } finally {
+    await app.close();
+  }
+}
+
+main().catch((err) => {
+  console.error('Freight demo seed failed:', err);
+  process.exit(1);
+});