feat(local_ads_management): add localization extension for ad tabs

- Create new extension on LocalAdsManagementTab enum
- Implement l10n method to return localized strings for each ad tab type
- Import necessary packages and dependencies

Author: fulleni

lib/shared/extensions/local_ads_management_tab_l10n.dart

@@ -0,0 +1,21 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_news_app_web_dashboard_full_source_code/l10n/l10n.dart';
+import 'package:flutter_news_app_web_dashboard_full_source_code/local_ads_management/bloc/local_ads_management_bloc.dart';
+
+/// Extension on [LocalAdsManagementTab] to provide localized descriptions.
+extension LocalAdsManagementTabL10n on LocalAdsManagementTab {
+  /// Returns a localized string for the [LocalAdsManagementTab] enum value.
+  String l10n(BuildContext context) {
+    final l10n = context.l10n;
+    switch (this) {
+      case LocalAdsManagementTab.native:
+        return l10n.nativeAdsTab;
+      case LocalAdsManagementTab.banner:
+        return l10n.bannerAdsTab;
+      case LocalAdsManagementTab.interstitial:
+        return l10n.interstitialAdsTab;
+      case LocalAdsManagementTab.video:
+        return l10n.videoAdsTab;
+    }
+  }
+}