Define routes, controllers of sessions

Work in progress, debugging

server/src/api/routes/index.js

@@ -0,0 +1,12 @@
+import { Router } from 'express'
+import sessions from './sessions.js'
+
+const router = Router()
+
+router.get('/', (req, res) => {
+  res.send('Hello API!')
+})
+
+router.use('/sessions', sessions)
+
+export default router