feat: download

- able to download file from express

server/controllers/ontimeController.js

@@ -0,0 +1,11 @@
+// Create controller for GET request to '/ontime/download'
+// Returns -
+export const eventsDownload = async (req, res) => {
+  res.download('db.json', 'ontime events.json', (err) => {
+    if (err) {
+      res.status(500).send({
+        message: 'Could not download the file. ' + err,
+      });
+    }
+  });
+};