Add: douyin like (#1710)

- Closes #1694

lib/router.js

@@ -727,6 +727,7 @@ router.get('/curseforge/files/:project', require('./routes/curseforge/files'));
 
 // 抖音
 router.get('/douyin/user/:id', require('./routes/douyin/user'));
+router.get('/douyin/like/:id', require('./routes/douyin/like'));
 
 // 少数派 sspai
 router.get('/sspai/series', require('./routes/sspai/series'));