feat: add linux patchwork comments (#1327)

lib/routes/patchwork.kernel.org/cache.js

@@ -0,0 +1,17 @@
+const axios = require('../../utils/axios');
+
+module.exports = {
+    getPatchnameFromID: async (ctx, id) => {
+        const key = 'patchwork-kernel-org-patchname-from-id-' + id;
+        let name = await ctx.cache.get(key);
+        if (!name) {
+            const patchDetail = await axios({
+                method: 'get',
+                url: `https://patchwork.kernel.org/api/patches/${id}/`,
+            });
+            name = patchDetail.data.name;
+            ctx.cache.set(key, name, 24 * 60 * 60);
+        }
+        return name;
+    },
+};