[Lua weapons] Minigun

Yes, its minigun. Pretty sure, everyone knows how to use it - just hold the fire button until you run out of infinite bullets. Dont forget, that minigun needs to spin up for about a second.

Might be a little glitchy, some T H I C C images are used, sorry)

Ver. 1.1 changes
- added bullet spread

Ver.1.2 changes
- new controls, now it's possible to aim and shoot at the same time. However, it's now difficult to walk and shoot at the same time, but you don't walk much while shooting minigun, do you?

Sorry, PC users, unless I get Principia on mine, I won't make normal controls