feat(flutter): 去掉剧场封面角标并重做创作页

lib/l10n/app_localizations_zh.dart

@@ -312,6 +312,12 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get createUploadSubtitle => '发布已完成的漫剧';
 
+  @override
+  String get createMottoPrimary => '你的想象';
+
+  @override
+  String get createMottoSecondary => '可以被更多人看见';
+
   @override
   String get weekdayMon => '周一';