Collapsible Sidebar for Flutterflow

I'm looking for a skilled Flutterflow developer to create a collapsible sidebar that works like the video link below:

https://www.freelancer.com/users/l.php?url=https:%2F%2Fyoutube.com%2Fwatch%3Fv%3DaE1PqHp1-QI%26si%3Dhq7VdSaFIpGgy6uJ&sig=559e2ad728009875b438b1bc6803f35775b01378fbe2eab87032a44431ed9f06