adding version banner to check if a new version of fredy is available

lib/api/routes/versionRouter.js

@@ -0,0 +1,30 @@
+import restana from 'restana';
+import fetch from 'node-fetch';
+import { getPackageVersion } from '../../utils.js';
+
+const service = restana();
+const versionRouter = service.newRouter();
+
+versionRouter.get('/', async (req, res) => {
+  const versionPayload = await getCurrentVersionFromGithub();
+  res.body = versionPayload == null ? { newVersion: false } : versionPayload;
+  res.send();
+});
+
+async function getCurrentVersionFromGithub() {
+  const raw = await fetch('https://api.github.com/repos/orangecoding/fredy/releases/latest');
+  const data = await raw.json();
+  const localFredyVersion = await getPackageVersion();
+  if (localFredyVersion === data.tag_name) {
+    return null;
+  }
+  return {
+    newVersion: true,
+    version: data.tag_name,
+    url: data.html_url,
+    body: data.body,
+    localFredyVersion,
+  };
+}
+
+export { versionRouter };