WIP: Headless broadcast

[PabstMirror]

Had a feature request to allow playing music via radios.
This allows an AI unit to talk or speak on radio with the use of
some external ts client that is outputting sound e.g.: https://github.com/Splamy/TS3AudioBot

https://www.youtube.com/watch?v=MTFx7xuhRjE

Example use:

[q2, "Botty", 0, 0, ""] call acre_sys_headless_fnc_start // has AI unit q2 start speaking with "Botty"'s Audio 

Ultimately, I think this feature is just too niche (and kind of hackey) to add publicly.
But it does seem to be a useful tool in debugging.

also fun bug:
acre just expects mono microphone data, but TS is capable of stereo
without the mono fix, everything was pitch shifted lower because the sound data is interleaved [left, right, left]

[jonpas]

Ultimately, I think this feature is just too niche (and kind of hackey) to add publicly.

Hackey part yes, otherwise I would say this fits public API just fine.

also fun bug:

Maybe we can split that off to include in next release? Unless you intend to finish this.

[JordannDev]

Is there any intention of this being merged and put into release? I think this could be very useful for scenarios where game masters want ambient radio traffic over usable radios (as an example use case).