Adjusted mask glow for Super PMCs.

Added a new alternate skingroup to the Super PMCs, i wonder what this is a reference to?

i also renamed the display names for the playermodels and NPCs, changing from "Soldier" to "PMC" this was a remnant of the first 2019 version and i changed it now to make searching for the PMs and NPCs a little more streamlined.

Small texture oversight fix.

Swapped out the alt gasmask texture with a modified version of the original, its less worn, but it fits with the rest of the assets better, and also swaps out the normalmap which fixes some lighting issues.

Remade a few normalmaps.

Added a new Gasmask bodygroup, and NPC related variants.

Reverted back to the HL2 eyes shader for the eyes after putting more thought into it, mainly optimization.

i did clean up the textures for the eyes however so its more smooth.

Tweaked eye textures a bit.

Replaced the HL2 eyes with L4D shader based eyes, with textures made by yours truly, slightly more expensive but looks nicer, i tweaked them unlike other refract eyes in terms of glossiness so they wont stick out like a sore thumb.

Also renamed from PMC Pack 2019 to PMC Pack Redux because the current iteration is long past that version of the pack in general, almost completely.

Added Combine Soldier keyvalues to all the hostile NPC models, this does not touch playermodels or friendly NPC models.

Why? this allows the models to behave properly when the Super Gravity gun is used on them, you cannot use it on other players or citizen based NPCs as thats hardcoded, otherwise no other notable changes.