Add TuYa SNTZ009 water leak sensor (#4045)

Co-authored-by: Mateusz Dziurdziak <mateusz.dziurdziak@fara.no>

lib/extension/homeassistant.js

@@ -1820,6 +1820,7 @@ const mapping = {
     'ZSTY-SM-11ZG-US-W': [cfg.switch],
     'ZSTY-SM-1CTZG-US-W': [cfg.cover_position],
     'ZSTY-SM-1DMZG-US-W': [cfg.light_brightness],
+    'SNTZ009': [cfg.binary_sensor_water_leak],
 };
 
 const defaultStatusTopic = 'homeassistant/status';