add todo app module

todo_app/controllers/controllers.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+from odoo import http
+from odoo.http import request, route, Controller
+
+class OwlApp(Controller):
+    @http.route(['/owl-app'], type='http', auth='public')
+    def root(self):
+        return request.render('todo_app.root')