[INFO] ElegantOTA is replaced with ArduinoOTA

[RomanAlexandroff]

After experiencing countless issues and instabilities using ElegantOTA (not only) in this project, the decision has been made to migrate all the OTA functionality to ArduinoOTA. The changes to the project has been made and tested. So far, ArduinoOTA has shown much greater stability and reliability.

To update with ArduinoOTA:

1. make sure the device is ON and within range of the Wi-Fi network you defined as HOME_SSID in your credentials.h file;
2. type your OTA password into the Telegram chat. Wait for OTA activation confirmation and proceed to the next step.

Do not forget to start your password message with a slash (/) symbol. By this symbol the Telegram bot understands that you are addressing him.
Do not spam the chat with messages. In Home mode the device wakes up once every 30 minutes, so it may take some time to answer.
Do not just leave the device with activated OTA mode. The device will be waiting for you to start the update for hours upon hours, what will quickly drain out the battery! If you suddenly decided not to update, send the device a message with any other command — that will cancel OTA mode and put it to sleep.

3. in Arduino IDE go to Tools > Port and click on the device name. If the name is not in the port list, restart your Arduino IDE and repeat the step;
4. Click on the Burn button to upload the new firmware to the device.