add support for Tuya Soil Moisture meter

[fjthomassen]

Hi,

Please add support for Tuya Soil Moisture meter

humidity
temp_current | temp_current
temp_unit_convert | temp_unit_convert
battery_state | battery_state
battery_percentage | battery_percentage

[0x5e]

what's the category code of the device?

[fjthomassen]

I think the category code is Temperature and Humidity Sensor "wsdcg"
but the product is defined by tuya as a "plant monitor"

[jomotech-pt]

zwjcy