Add Airtunes2 support

[ticaki]

While rummaging around I found a way to integrate this adapter into the Apple Universion.

via Amazon Polly (PCM16)

the npm package: node-airtunes2

you should be able to send voice output to a Homepod mini and the like.

I don't have time for this at the moment and I'm not sure if I could manage it, so I'm posting it here. Maybe I/someone will find time.