Added more Brutus related things

Added Brutus death anims

This entire time there was only two different motd zombies. Well now theres all four

Finalized the Mob box particle effect

Comedy for the mob box and tomb box

Added Afterlife Shock Panel model

Added BO2 Brutus and his assets.

Added new spawn dust particles(More so styled like the actual spawn dust particle seen in the actual games)

Added misc icons relating to the hud

Fixed crawl jumpup to mantle over animation being positioned incorrectly