Org.smarthomej.binding.tuya config issues

Hi all,

I am playing around with the mentioned addon org.smarthomej.binding.tuya
At the moment all is configured via the UI of OH 3.3, but I am wondering if this is as well possible via file configuration. I have googled and tried, but I have no clue how to build the thing and items file.

Has anybody here done it this way and could help me?