Add CHT832X (#5718)

* Update repositories.txt

Add library for AGS3871 Carbon Monoxide sensor

* Update repositories.txt

Arduino library for CHT832X temperature and humidity sensor.

Author: RobTillaart

repositories.txt

@@ -5357,6 +5357,7 @@ https://github.com/RobTillaart/bitHelpers
 https://github.com/RobTillaart/BoolArray
 https://github.com/RobTillaart/CHT8305
 https://github.com/RobTillaart/CHT8310
+https://github.com/RobTillaart/CHT832X
 https://github.com/RobTillaart/Complex
 https://github.com/RobTillaart/Correlation
 https://github.com/RobTillaart/CountDown