Moved fire, explosion, gas, and some machine and water sound effects over to this from Alternative Atmosphere

A couple more plat and button sauce effectsssssssssssssssssssssss
New showcase that was hastily made!!!!!!!!!!!!!

I've realized FEAR, DOOM 3, and Black Mesa pull from/share a few of the same sfx resources so I replaced the lower quality sounds; (like 3 particular platform/elevator sound effects) with better quality ones.

Some stuff from Alternative Atmosphere moved over (slicing and a few EP1 sounds).
A couple new door and platform/elevator sounds.
More physics object sounds.

A singular file was added.
hall_elev_door.wav
Behold.

Better body impact sound variety + some more metal sound effects being replaced

Replaced body impact sounds with ones from F.E.A.R.

Made body/flesh breaking and gib sounds much more meatier and juicy by replacing them with sounds from No More Room In Hell Rehaul Mod https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2400326316 (and also Magmacow)