Changed to use workshop resource downloading to fix missing textures and models when a user isn't subscribed to this addon

Added support for beta CR4TTT hitmarkers immunity feature

Fixed potential conflicts when multiple people use the immortality, invisibility, or speed potions at the same time

Updated immortality, invisibility, and speed potions to hopefully fix cases of them not disabling properly

Fixed poison timers not stopping when a player dies

Updated to use replicated convars

Added a couple more checks to hopefully prevent rendering errors

Fixed disabling invisibility setting the glass material which should be clear but isn't for everyone

Fixed being able to use poison on the same person twice, essentially wasting some of it

Fixed speed potion causing players to have their speed set to 1, making them unmovable, when they never even used it