Initial Nuxt frontend import

- Complete GGZ Ecademy Nuxt.js user portal
- Learning products browser and management
- Member management interface
- User authentication and roles
- Multi-language support (NL/EN)
- Vuex store for state management
- Component-based architecture

middleware/user.js

@@ -0,0 +1,3 @@
+export default function ({ store, redirect }) {
+    if (!store.getters.isUser) { return redirect('/') }
+}