feat(content_management): add archived content state

- Define ArchivedContentTab enum for available tabs
- Define ArchivedContentStatus enum for operation statuses
- Create ArchivedContentState class with properties for each tab
- Implement copyWith method for state immutability
- Override props for Equatable comparison

Author: fulleni

lib/content_management/bloc/archived_content/archived_content_state.dart

@@ -0,0 +1,108 @@
+part of 'archived_content_bloc.dart';
+
+/// Defines the tabs available in the archived content section.
+enum ArchivedContentTab {
+  /// Represents the Headlines tab.
+  headlines,
+
+  /// Represents the Topics tab.
+  topics,
+
+  /// Represents the Sources tab.
+  sources,
+}
+
+/// Represents the status of archived content operations.
+enum ArchivedContentStatus {
+  initial,
+  loading,
+  success,
+  failure,
+}
+
+/// The state for the archived content feature.
+class ArchivedContentState extends Equatable {
+  const ArchivedContentState({
+    this.activeTab = ArchivedContentTab.headlines,
+    this.headlinesStatus = ArchivedContentStatus.initial,
+    this.headlines = const [],
+    this.headlinesCursor,
+    this.headlinesHasMore = false,
+    this.topicsStatus = ArchivedContentStatus.initial,
+    this.topics = const [],
+    this.topicsCursor,
+    this.topicsHasMore = false,
+    this.sourcesStatus = ArchivedContentStatus.initial,
+    this.sources = const [],
+    this.sourcesCursor,
+    this.sourcesHasMore = false,
+    this.exception,
+  });
+
+  final ArchivedContentTab activeTab;
+  final ArchivedContentStatus headlinesStatus;
+  final List<Headline> headlines;
+  final String? headlinesCursor;
+  final bool headlinesHasMore;
+  final ArchivedContentStatus topicsStatus;
+  final List<Topic> topics;
+  final String? topicsCursor;
+  final bool topicsHasMore;
+  final ArchivedContentStatus sourcesStatus;
+  final List<Source> sources;
+  final String? sourcesCursor;
+  final bool sourcesHasMore;
+  final HttpException? exception;
+
+  ArchivedContentState copyWith({
+    ArchivedContentTab? activeTab,
+    ArchivedContentStatus? headlinesStatus,
+    List<Headline>? headlines,
+    String? headlinesCursor,
+    bool? headlinesHasMore,
+    ArchivedContentStatus? topicsStatus,
+    List<Topic>? topics,
+    String? topicsCursor,
+    bool? topicsHasMore,
+    ArchivedContentStatus? sourcesStatus,
+    List<Source>? sources,
+    String? sourcesCursor,
+    bool? sourcesHasMore,
+    HttpException? exception,
+  }) {
+    return ArchivedContentState(
+      activeTab: activeTab ?? this.activeTab,
+      headlinesStatus: headlinesStatus ?? this.headlinesStatus,
+      headlines: headlines ?? this.headlines,
+      headlinesCursor: headlinesCursor ?? this.headlinesCursor,
+      headlinesHasMore: headlinesHasMore ?? this.headlinesHasMore,
+      topicsStatus: topicsStatus ?? this.topicsStatus,
+      topics: topics ?? this.topics,
+      topicsCursor: topicsCursor ?? this.topicsCursor,
+      topicsHasMore: topicsHasMore ?? this.topicsHasMore,
+      sourcesStatus: sourcesStatus ?? this.sourcesStatus,
+      sources: sources ?? this.sources,
+      sourcesCursor: sourcesCursor ?? this.sourcesCursor,
+      sourcesHasMore: sourcesHasMore ?? this.sourcesHasMore,
+      exception: exception ?? this.exception,
+    );
+  }
+
+  @override
+  List<Object?> get props => [
+        activeTab,
+        headlinesStatus,
+        headlines,
+        headlinesCursor,
+        headlinesHasMore,
+        topicsStatus,
+        topics,
+        topicsCursor,
+        topicsHasMore,
+        sourcesStatus,
+        sources,
+        sourcesCursor,
+        sourcesHasMore,
+        exception,
+      ];
+}