feat: implement internal and user security middlewares and refactor route structures to support view and API separation

auth/src/routes/views/sessions.js

@@ -0,0 +1,7 @@
+const router = require('express').Router();
+
+router.get('/', userAuth, (req, res) => {
+    res.render('sessions');
+});
+
+module.exports = router;