In config.ini, add the [pins] section, with key/value entries
for the expected pin and the channel regex to switch to when
the caller enters the pin. Here's an example:
[pins]
12345 = DevOps Team
23456 = Sales Team
- playAudioFile() makes it possible to play a WAV file
to either the caller or the mumble channel
- menu skeleton has DTMF handling and is ready for
adding '*n' functions (like *5 = mute).