Add submission # 6110

#6110

Author: ArduinoBot

registry.txt

@@ -8005,3 +8005,4 @@ https://github.com/PeterBakarac/BayesianOptimization.git|Contributed|Bayesian Op
 https://github.com/Kadacheahmedrami/ESPExpress.git|Contributed|ESPExpress
 https://github.com/YoupiLab/YoupiLab_IoT_ESP.git|Contributed|YoupiLab_IoT_ESP
 https://github.com/EatingJan1/MCHyetometer-REED.git|Contributed|MCHyetometer-REED
+https://github.com/RobTillaart/decibel.git|Contributed|decibel