Add submission # 7157

#7157

Author: ArduinoBot

registry.txt

@@ -8527,3 +8527,4 @@ https://github.com/k3ldar/NextionControl.git|Contributed|NextionControl
 https://github.com/RobTillaart/logicAnalyzer.git|Contributed|logicAnalyzer
 https://github.com/chipnorm/TM1637.git|Contributed|ChipNorm_TM1637
 https://github.com/DavinderHanda/HandaDigitalSpeaker.git|Contributed|HandaDigitalSpeaker
+https://github.com/chipnorm/SHT21.git|Contributed|ChipNorm_SHT21