Add "Shuffle" to API Programming Tools

Khazul is a premier extension for Harmony, and it includes being able to access up to 10 playlists with a single button push.

What it cannot do at present is shuffle those playlists. Man, that would be first rate.

The Roon API does have the ability to set shuffle mode.

https://roonlabs.github.io/node-roon-api/RoonApiTransport.html

I do this in my Home Assistant roon extension.