Add submission # 4597

#4597

Author: ArduinoBot

registry.txt

@@ -7090,3 +7090,4 @@ https://github.com/GyverLibs/pgm_utils.git|Contributed|pgm_utils
 https://github.com/sparkfun/SparkFun_Qwiic_OTOS_Arduino_Library.git|Contributed|SparkFun Qwiic OTOS Arduino Library
 https://github.com/BasPaap/Bas.CallbackCaller.git|Contributed|Bas.CallbackCaller
 https://github.com/pokerobo/Pokerobo_I2C.git|Contributed|Pokerobo_I2C
+https://github.com/RobTillaart/PCR.git|Contributed|PCR