Add "global radio" option

[alifeee]

In other proximity chat games, it is nice to use a "global radio" chat (e.g., Barotrauma) to send voicelines to everyone.

Something similar might be possible via adding a hotkey to disable positional audio, so you could temporarily broadcast your voice to everyone (as you would not be sending position data, so their clients would assume you are not in the game).

This could be done in a number of ways

• hijack Mumble's settings to disable PA
• while a hotkey is held, change the PA context, so it doesn't match with other players. This effectively puts you in a different game server.

The negative of this approach is that you broadcast to everyone, but if you turn off PA, you will also hear everyone when you turn off PA.

There may be another, more niche, way of doing a similar thing. I cannot think of it as of now.