feat: add staff certificates feature with pubspec configuration

- Created pubspec.yaml for the staff_certificates feature with dependencies including flutter_bloc, equatable, get_it, and flutter_modular.
- Established paths for KROW dependencies: design_system, core_localization, krow_domain, krow_core, and krow_data_connect.
- Added firebase_auth and firebase_data_connect as dependencies.
- Generated pubspec.lock file to lock dependency versions.

apps/mobile/packages/features/staff/authentication/lib/src/data/repositories_impl/auth_repository_impl.dart

@@ -38,17 +38,12 @@ class AuthRepositoryImpl implements AuthRepositoryInterface {
   Future<String?> signInWithPhone({required String phoneNumber}) async {
     final Completer<String?> completer = Completer<String?>();
 
-    print('Starting phone number verification for $phoneNumber');
-
     await firebaseAuth.verifyPhoneNumber(
       phoneNumber: phoneNumber,
       verificationCompleted: (_) {
-        print('Phone verification completed automatically.');
-        print(phoneNumber);
       },
       verificationFailed: (FirebaseAuthException e) {
         if (!completer.isCompleted) {
-          print('Phone verification failed: ${e.message}');
           completer.completeError(
             Exception(e.message ?? 'Phone verification failed.'),
           );