Develop main screen

Main screen should contain categories of food available by Keto Diet And floating button to go to chat.

Follow the design: https://www.figma.com/file/LJSKfdsTeu43E36B1oMItn/Keto-Expert?type=design&node-id=0-1&mode=design&t=KAjpFCIcSzFSPIrZ-0