feat: github issue add author (#2016)

lib/routes/github/issue.js

@@ -30,6 +30,7 @@ module.exports = async (ctx) => {
                 title: item.title,
                 description: md.render(item.body) || 'No description',
                 pubDate: new Date(item.created_at).toUTCString(),
+                author: item.user.login,
                 link: `${host}/${item.number}`,
             })),
     };