Add submission # 5267

#5267

Author: ArduinoBot

registry.txt

@@ -7521,3 +7521,4 @@ https://github.com/nhjschulz/cfsm.git|Contributed|CFSM
 https://github.com/bitcode-tech/uart_keyboard.git|Contributed|UART_Keyboard
 https://github.com/julio22011/EasyOledUI.git|Contributed|EasyOledUI
 https://github.com/DefHam140/ZModbusRTU.git|Contributed|ZModbusRTU
+https://github.com/felixerdy/QRCodeGenerator.git|Contributed|QRCodeGenerator