Add submission # 6489

#6489

Author: ArduinoBot

registry.txt

@@ -8246,3 +8246,4 @@ https://github.com/KrrishVerma/Atmel_M90E32AS_ESP32.git|Contributed|Atmel_M90E32
 https://github.com/phuongnamzz/HLK-LD6002.git|Contributed|HLK-LD6002
 https://github.com/GyverLibs/uPID.git|Contributed|uPID
 https://github.com/matteo-colombo-kernel/SimpleConnect.git|Contributed|SimpleConnect
+https://github.com/GyverLibs/UART_RF.git|Contributed|UART_RF