feat(app): 剧场列表增加语种筛选

test/catalog/drama_model_test.dart

@@ -13,6 +13,7 @@ void main() {
       'totalEpisodes': 77,
       'isHot': true,
       'viewCount': 3100000,
+      'language': 'zh-CN',
       'preview': {
         'id': 9,
         'number': 1,
@@ -27,6 +28,7 @@ void main() {
     expect(drama.episodes.single.videoUrl, '/files/episode/9.mp4');
     expect(drama.episodeCount, 77);
     expect(drama.isHot, isTrue);
+    expect(drama.language, 'zh-CN');
   });
 
   test('should_have_no_episodes_when_list_card_has_no_playable_preview', () {