GMFX chemical wafare expansion

this addon makes the gas zones from GMFX better and more realistic. this mod does this by doing the following:

1: transforms the "lethal" and "non lethal" gasses to represent 3 real life chemical agents. they are:
- CS gas (less lethal tear agent)
- Chlorine gas (lethal choking agent)
- Sarin gas (lethal nerve agent)

CS gas is white, and deals minimal damage to players. it can still kill someone with prolonged exposure, but it is unlikely. the gas does cause severe blurring on your screen, however.

Chlorine gas is infamous for its greenish-yellow color and lethality. it will kill someone in less than a minute if unprotected, but is also easily avoided.

Sarin gas is colorless, odorless, and tasteless. nearly undetectable in the real world. the only sign you will get of Sarin gas is random damage every 10 seconds or so. it will kill rapidly if left unprotected

2: adds the following items to the game:
- M651 40mm cs gas grenade
- VOG 25 40mm CS gas grenade
- M72A2 gas genade (US)
- M25A1 gas grenade (US)
- K51 gas grenade (USSR)
-homemade gas bomb (chlorine gas)

3: adds gas artillery. simple as that, just an artillery shell loaded up with Chlorine gas.

if you would like to see me support this mod further, feel free to dm me on discord @domin8849

(note: the gas clouds are a little off compared to the kill radii. will try to fix this)