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/packages/features/staff/staff_main/pubspec.yaml

@@ -22,9 +22,9 @@ dependencies:
   core_localization:
     path: ../../../core_localization
 
-  # Features (Commented out until they are ready)
-  # staff_home:
-  #   path: ../home
+  # Features
+  staff_home:
+    path: ../home
   # staff_shifts:
   #   path: ../shifts
   # staff_payments: