add functions

functions/index.js

@@ -0,0 +1,9 @@
+const functions = require("firebase-functions");
+
+// // Create and deploy your first functions
+// // https://firebase.google.com/docs/functions/get-started
+//
+// exports.helloWorld = functions.https.onRequest((request, response) => {
+//   functions.logger.info("Hello logs!", {structuredData: true});
+//   response.send("Hello from Firebase!");
+// });