Add submission # 6064

#6064

Author: ArduinoBot

registry.txt

@@ -7974,3 +7974,4 @@ https://github.com/styropyr0/MPM10.git|Contributed|MPM10
 https://github.com/styropyr0/ML8511.git|Contributed|ML8511 UV Sensor Library
 https://github.com/styropyr0/APDS9960.git|Contributed|APDS9960
 https://github.com/styropyr0/ADS111S.git|Contributed|ADS111S
+https://github.com/RobTillaart/PCA9671.git|Contributed|PCA9671