feat(l10n): add extension for localized feed decorator type names

- Create new extension on FeedDecoratorType to provide localized string representations
- Add l10n method that returns the localized name for each FeedDecoratorType
- Cover all cases of FeedDecoratorType in the switch statement
- Import necessary packages and libraries

Author: fulleni

lib/shared/extensions/feed_decorator_type_l10n.dart

@@ -0,0 +1,27 @@
+import 'package:core/core.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_news_app_web_dashboard_full_source_code/l10n/l10n.dart';
+
+/// {@template feed_decorator_type_l10n}
+/// Extension on [FeedDecoratorType] to provide localized string representations.
+/// {@endtemplate}
+extension FeedDecoratorTypeL10n on FeedDecoratorType {
+  /// Returns the localized name for a [FeedDecoratorType].
+  String l10n(BuildContext context) {
+    final l10n = context.l10n;
+    switch (this) {
+      case FeedDecoratorType.linkAccount:
+        return l10n.feedDecoratorTypeLinkAccount;
+      case FeedDecoratorType.upgrade:
+        return l10n.feedDecoratorTypeUpgrade;
+      case FeedDecoratorType.rateApp:
+        return l10n.feedDecoratorTypeRateApp;
+      case FeedDecoratorType.enableNotifications:
+        return l10n.feedDecoratorTypeEnableNotifications;
+      case FeedDecoratorType.suggestedTopics:
+        return l10n.feedDecoratorTypeSuggestedTopics;
+      case FeedDecoratorType.suggestedSources:
+        return l10n.feedDecoratorTypeSuggestedSources;
+    }
+  }
+}