A much more focused replacement for Hornmod, specc'd out by Tyron and Oni working together and implemented by the author of this commit because it's pretty funny.
- Followers have `hornsound` in their SOC configuration.
- The default sound for all followers without a provided one is sfx_horn00.
- They'll play this sound if you use lookback with one following you, and there's nearby players to get the player looking all the way around.
- Only the players who are successfully considered for lookback will hear it.
- Has a v1-like visual with less randomisation, but still netsynced.
- Also controlled by the cvar `taunthorns`, which, like `tauntvoices`, takes "Tasteful" (default), "Meme", and "Off".
TODO: make the condition for horn a little delayed, so you have to hold lookback for a little bit.
- Default color definitions are now parsed properly
- Fallback color value is now default color instead of player color
- Player setup now renders follower with right color
Selecting the first follower in the list is currently broken, will
fix later
- ANGLELAG lets you set how fast the followers swivel around. Default is 8*FRACUNIT, old behavior can be returned with FRACUNIT.
- Followers reverse their angle when you hold the lookback button.
- All lag values can't go below FRACUNIT instead of 1.
