-Added rimlighting for more realistic lighting

--Shared update across most of my playermodels--

Finally fixed the issue of multiplayer footsteps playing both normal and custom ones at the same time on clients

-Adjusted phong shading values

Shared update across all of my playermodels:
-Footsteps will no longer keep playing when the player is dead

-added crystal wyvern
-improved the model of tek wyvern
-removed unnecessary lod from models

-slightly improved the way footsteps are handled in multiplayer (your footsteps would play twice at a time in multiplayer. Fixed partially, now your footsteps don't play twice, but you can still hear other players emit footsteps twice)

-added panicked running animations for zeta bots
-death animation does not loop anymore

-added c_arms

-added more sound effects

-added sound effects! Console commands are:

player_dragon_sounds 1
● Custom sound effects when hurt or dying. Default is set to 1

player_dragon_footsteps 1
● Custom footstep sounds. Default is set to 1