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/package.json

@@ -15,6 +15,7 @@
     "test:e2e": "jest --config ./test/jest-e2e.json",
     "type-check": "tsc --noEmit",
     "seed:demo-scheduling": "ts-node -r tsconfig-paths/register src/scripts/seed-demo-scheduling.ts",
+    "seed:freight-demo": "ts-node -r tsconfig-paths/register src/scripts/seed-freight-demo.ts",
     "seed:fleet-wagons": "bash ../../../docs/new/seeds/seed-fleet-wagons.sh"
   },
   "dependencies": {