feat(route): Add GitHub Notification (#12197)

* Add GitHub notification

* add docs and radar.

* add parseDate.

* Apply suggestions from code review

* Update router.js

* Update maintainer.js

---------

lib/v2/github/notifications.js

@@ -0,0 +1,47 @@
+const got = require('@/utils/got');
+const { parseDate } = require('@/utils/parse-date');
+
+const apiUrl = 'https://api.github.com';
+const config = require('@/config').value;
+
+module.exports = async (ctx) => {
+    if (!config.github || !config.github.access_token) {
+        throw Error('GitHub trending RSS is disabled due to the lack of <a href="https://docs.rsshub.app/install/#pei-zhi-bu-fen-rss-mo-kuai-pei-zhi">relevant config</a>');
+    }
+    const headers = {
+        Accept: 'application/vnd.github.v3+json',
+        Authorization: `Bearer ${config.github.access_token}`,
+        'X-GitHub-Api-Version': '2022-11-28',
+    };
+
+    const response = await got(`${apiUrl}/notifications`, {
+        headers,
+    });
+    const notifications = response.data;
+
+    const items = notifications.map((item) => ({
+        title: item.subject.title,
+        description: item.subject.title,
+        pubDate: parseDate(item.updated_at), // item.updated_at follows ISO 8601.
+        guid: item.id,
+        link: item.subject.url,
+    }));
+
+    ctx.state.data = {
+        title: 'Github Notifications',
+        link: 'https://github.com/notifications',
+        item: items,
+    };
+
+    ctx.state.json = {
+        title: 'Github Notifications',
+        item: notifications,
+        rateLimit: {
+            limit: parseInt(response.headers['X-RateLimit-Limit']),
+            remaining: parseInt(response.headers['X-RateLimit-Remaining']),
+            reset: parseDate(parseInt(response.headers['X-RateLimit-Reset']) * 1000),
+            resoure: response.headers['X-RateLimit-Resource'],
+            used: parseInt(response.headers['X-RateLimit-Used']),
+        },
+    };
+};