add: 政府网最新文件 (#1662)

- 从搜索页获取
- 提供一个文种分类的筛选

lib/router.js

@@ -1012,6 +1012,7 @@ router.get('/cyzone/author/:id', require('./routes/cyzone/author'));
 
 // 政府
 router.get('/gov/zhengce/zuixin', require('./routes/gov/zhengce/zuixin'));
+router.get('/gov/zhengce/wenjian/:pcodeJiguan?', require('./routes/gov/zhengce/wenjian'));
 
 // 小黑盒
 router.get('/xiaoheihe/user/:id', require('./routes/xiaoheihe/user'));