Compressed textures, slightly tweaked base materials.

- Reverted default skin to old textures - FO4 PBR materials don't work well in Source
- Optimized textures (less space and instant loading even on my toaster of a PC)
- Redone all materials (less ceramic, more metal)
- Changed firing sounds. Yes, again.
- Redone extended barrel attachment from scratch (and brought it back)
- Tweaked barrel attachments stats
- New icons

forgot to add .dx80.vtx files

- New default skin materials (begone ceramic pistol!)
- New muzzle brake materials
- New firing sounds
- New worldmodel
- Moved all custom models into bodygroups
- Removed ugly CW2-styled extended barrel modelhack (it doesn't go well with new materials)
- Nerfed muzzle brake a little bit
- Updated skins attachment code
- Fixed some stats

Barrel attachments, sound and animation tweaks - thanks to Khris.
Added OD Green skin.

install shared parts

little stats overhaul (pyro saves the day again)
the gun uses 357 ammo now

moved skins to lua material replacement instead of setskin (and got rid of think hook)
added gold finish (credints to aus1271)

changed vm offsets
fixed worldmodel silenced muzzle

forgot about status length for extended mag reloads OOPS