If there are any authorized_tokens saved in context, this handler will attempt to authenticate
an RFID against those tokens. Triggers
If the tokens get updated in /opt/autopi/rfid/settings.yaml the manager needs to know about
the changes - use
load_settings_handler to reload the settings.
Read the settings file stored in /opt/autopi/rfid/settings.yaml and load it.
Reads input from the RFID reader.
system/rfid/<rfid>/read events when RFID chips are read.
Use in conjunction with reader_handler.