feat(content_management): add archived content page

- Create a new page for viewing and managing archived content
- Implement a TabBar for navigating between archived headlines, topics, and sources
- Add placeholder text for each tab section
- TODO: Implement proper localization for the page title

Author: fulleni

lib/content_management/view/archived_content_page.dart

@@ -0,0 +1,59 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_news_app_web_dashboard_full_source_code/content_management/bloc/content_management_bloc.dart';
+import 'package:flutter_news_app_web_dashboard_full_source_code/l10n/l10n.dart';
+import 'package:ui_kit/ui_kit.dart';
+
+/// {@template archived_content_page}
+/// A page for viewing and managing archived content.
+/// {@endtemplate}
+class ArchivedContentPage extends StatefulWidget {
+  /// {@macro archived_content_page}
+  const ArchivedContentPage({super.key});
+
+  @override
+  State<ArchivedContentPage> createState() => _ArchivedContentPageState();
+}
+
+class _ArchivedContentPageState extends State<ArchivedContentPage>
+    with SingleTickerProviderStateMixin {
+  late TabController _tabController;
+
+  @override
+  void initState() {
+    super.initState();
+    _tabController = TabController(length: 3, vsync: this);
+  }
+
+  @override
+  void dispose() {
+    _tabController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final l10n = AppLocalizationsX(context).l10n;
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Archived Content'), // TODO(you): Will be fixed in l10n phase.
+        bottom: TabBar(
+          controller: _tabController,
+          tabs: [
+            Tab(text: l10n.headlines),
+            Tab(text: l10n.topics),
+            Tab(text: l10n.sources),
+          ],
+        ),
+      ),
+      body: TabBarView(
+        controller: _tabController,
+        children: const [
+          Center(child: Text('Archived Headlines View Placeholder')),
+          Center(child: Text('Archived Topics View Placeholder')),
+          Center(child: Text('Archived Sources View Placeholder')),
+        ],
+      ),
+    );
+  }
+}