feat(flutter): 增加轮播自动播放与站内通知

lib/core/data/repositories/notice_repository.dart

@@ -0,0 +1,21 @@
+// Author: fruit.com.cn
+
+import '../models/notice.dart';
+import '../remote/notice_api.dart';
+
+/// Notice data source used by the page and controller.
+abstract interface class NoticeRepository {
+  /// Loads one notice page.
+  Future<NoticePage> page({required int pageIndex, int pageSize = 20});
+}
+
+/// HTTP-backed notice repository.
+class HttpNoticeRepository implements NoticeRepository {
+  const HttpNoticeRepository(this._api);
+
+  final NoticeApi _api;
+
+  @override
+  Future<NoticePage> page({required int pageIndex, int pageSize = 20}) =>
+      _api.page(pageIndex: pageIndex, pageSize: pageSize);
+}