[Feature] Epic Gamer Mode Admin toggle

[Spitballs]

https://github.com/goonstation/goonstati...6/pull/101

An admin toggle for Ass Day (or normal days if the admin is daring).

Sound effects play and text appears upon certain events.

First Death In Round: "FIRST BLOOD! (sound effect and text)"
Normal Player Death: "ULTRA KILL! (sound effect and text)"
Player Gib Death: "MONSTER KILL!! (sound effect and text)"
Explosion with over 30 power: "WICKED SICK! (sound effect and text)"
Late Joiner: "Prepare to fight! (sound effect and text)"
All Greentext: "Impressive. (sound effect)"

Roundstart: "Survival of the Fittest (song)"
Roundend: "Win Game (song)"

It's all tested and all works.

They should follow a the same protocol like in the quake game. 
The more people die in a certain time span would toggle the sound effect 'double kill, triple kill, quadruple kill ect'