Missing information about testing the app locally

[bartoszWesolowski]

Issue in /src/pages/resources/todo-app/index.md

Hello,
This tutorial shows how to build a simple app using App builder and React. What is missing here is how to work with this app locally - When we start the app we can see two URL that allows us to test it

To view your local application:
  -> https://localhost:9080
To view your deployed application in the Experience Cloud shell:
  -> https://experience.adobe.com/?devMode=true#/custom-apps/?localDevUrl=https://localhost:9080

Once we implement API calls in the app we can only test it using the second link where IMS profile is available. It would be great to extend this tutorial with a section describing what is the best practice to also work with the app locally.

Additionally to this app to work we need to include our custom App.js which require change in index.js -> import App from "./components/App";
Cheers :)