Expose Rule type so that Document.setCustomRules can be used (singerdmx#2484)

Author: tjarvstrand

CHANGELOG.md

@@ -16,6 +16,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Focus and open context menu on right click if unfocused [#2477](https://github.com/singerdmx/flutter-quill/pull/2477).
 * Update QuillController `length` extension method deprecation message [#2483](https://github.com/singerdmx/flutter-quill/pull/2483).
 
+### Added
+
+* `Rule` is now part of the public API, so that `Document.setCustomRules` can be used.
+
 ## [11.0.0] - 2025-02-16
 
 > [!IMPORTANT]

lib/flutter_quill.dart

@@ -33,6 +33,7 @@ export 'src/editor_toolbar_controller_shared/copy_cut_service/copy_cut_service_p
 export 'src/editor_toolbar_controller_shared/copy_cut_service/default_copy_cut_service.dart';
 export 'src/editor_toolbar_controller_shared/quill_config.dart';
 export 'src/l10n/generated/quill_localizations.dart';
+export 'src/rules/rule.dart' show Rule;
 export 'src/toolbar/embed/embed_button_builder.dart';
 export 'src/toolbar/simple_toolbar.dart';
 export 'src/toolbar/structs/link_dialog_action.dart';