feat: 增加lofter博客支持，官方rss暂时不可用 (#4448)

lib/router.js

@@ -1979,6 +1979,7 @@ router.get('/taptap/review/:id/:order?', require('./routes/taptap/review'));
 
 // lofter
 router.get('/lofter/tag/:name/:type?', require('./routes/lofter/tag'));
+router.get('/lofter/user/:username', require('./routes/lofter/posts'));
 
 // 米坛社区表盘
 router.get('/watchface/:watch_type?/:list_type?', require('./routes/watchface/update'));