New voices

- Following Oni's proposal. This means taunts are split into 2 types for offensive items and boost, 2 less hurt sounds, and there's another clip for using invincibility item (or whatever other powerful items we want to apply it to later; maybe size-down?)
- Win/lose quotes are played at full volume for the person who said it.
- A new sound effect plays when you hit someone with voices disabled.
- Reduce amount of RNG being called from the vanilla P_Play[whatever]Sound functions
- Added our skin sound constants to the dehacked list.
- Unrelated: finish line sfx plays in splitscreen