feat(staff): integrate staff_home feature

- Created staff_main package with module, bloc, and pages
- Integrated staff_home into staff_main
- Updated route constants to use /worker-main
- Fixed intl version conflict

apps/mobile/pubspec.yaml

@@ -10,6 +10,7 @@ workspace:
   - packages/data_connect
   - packages/core_localization
   - packages/features/staff/authentication
+  - packages/features/staff/home
   - packages/features/staff/staff_main
   - packages/features/client/authentication
   - packages/features/client/home