refactor(auth): improve import formatting

- Improved code readability.
- Removed unnecessary line breaks.

Author: fulleni

lib/authentication/bloc/authentication_bloc.dart

@@ -3,18 +3,17 @@ import 'dart:async';
 import 'package:bloc/bloc.dart';
 import 'package:equatable/equatable.dart';
 import 'package:ht_auth_repository/ht_auth_repository.dart';
-import 'package:ht_shared/ht_shared.dart'
-    show
-        AuthenticationException,
-        ForbiddenException,
-        HtHttpException,
-        InvalidInputException,
-        NetworkException,
-        NotFoundException,
-        OperationFailedException,
-        ServerException,
-        UnauthorizedException,
-        User;
+import 'package:ht_shared/ht_shared.dart' show
+    AuthenticationException,
+    ForbiddenException,
+    HtHttpException,
+    InvalidInputException,
+    NetworkException,
+    NotFoundException,
+    OperationFailedException,
+    ServerException,
+    UnauthorizedException,
+    User;
 
 part 'authentication_event.dart';
 part 'authentication_state.dart';