Add Am Alert Lib (#6190)

Author: maxpromer

repositories.txt

@@ -7953,3 +7953,4 @@ https://github.com/rjsachse/ESP32-SpeexDSP
 https://github.com/kingsmen732/Robot-face---sh1106-screen
 https://github.com/Robotistan/PicoBricks-for-RPico
 https://github.com/ParhamMoAsghari/ArduinoSmartButton
+https://github.com/ArtronShop/AmAlert-Arduino