Add submission # 3740

#3740

Author: ArduinoBot

registry.txt

@@ -6579,3 +6579,4 @@ https://github.com/he0119/arduino-miio.git|Contributed|SerialMIIO
 https://github.com/cotestatnt/Arduino-MySQL.git|Contributed|MySQL Query Client
 https://github.com/RobTillaart/PCA9549.git|Contributed|PCA9549
 https://github.com/m-shintaro/RTC_RX8025NB.git|Contributed|RTC_RX8025NB
+https://github.com/sh123/esp32_opus_arduino.git|Contributed|esp32_opus