add: initial commit

back/api/hello.js

@@ -0,0 +1,16 @@
+const express = require('express');
+const cookieParser = require('cookie-parser');
+const cors = require('cors');
+const jwt = require('jsonwebtoken');
+
+const router = express.Router();
+
+router.use(express.json());
+router.use(cookieParser());
+router.use(cors());
+
+router.get('/', (req, res) => {
+    res.send('Hello World!');
+});
+
+module.exports = router;