replaced piss material again

fixed extinguishing people

fixed all(?) the bad code from the previous update that broke multiplayer functionality

added postal 2 "piss on self" sound when you piss on yourself because somehow I forgot to add that in the last update

-finally added custom material
-new piss type system added to the SWEP (pee, blood, napalm)
-replaced the old pee sound with the sounds from POSTAL 2
-finally added firstperson censor (check description for client cvar to disable it)
-maybe some other stuff too idk i forget

fixed a bad filename

fixed the stream's strength and angle to not be centered at the bottom of the player's view

added console commands to make the addon easily usable in hopefully any gamemode:
bind <key> "+piss"
(allows you to piss on command rather than having to switch to the weapon)

bind <key> "unzip"
(lets you unzip freely)

also an "!unzip" chat command that does the same as the above

server operators can toggle the new commands with "piss_allow_commands 0/1" if they want to restrict usage to the weapon for any reason

added two new serverside convars:

piss_holster_on_switch 1/0
piss_limited 1/0

added 'piss_water_clouds' client convar to help with lag

enter

piss_water_clouds 0

to disable clouds in the water if you get lag

hopefully optimized underwater clouds a bit