Many of Tuya platform devices do not follow the Zigbee Cluster Library specifications, so the commands for each particular device are usually reverse-engineered by sniffing the traffic when connected to Tuya proprietary Zigbee coordinator. Often this work is already done by other home automation communities :), so it becomes a matter of finding the information on Github. Searching Github for _TZE200_sh1btabb" shows that this device is already supported in ZHA and Zigbee2MQTT, so the information on the commands ('data points' in Tuya terminology) is already there.
It shouldn't be so hard to add support for this device in Hubitat, the only problem is the time .. ;(
If you are sure that you want to dive into writing Zigbee drivers for Hubitat, I will surely help you to get started. The first step is to understand the debug logs that most of the HE drivers provide, so my proposal was to start from here.
