Implement some conds as upgrades/canteen effects #5
Description
https://wiki.teamfortress.com/wiki/Cheats#addcond
Most notable:
TF_COND_STEALTHED
TF_COND_FEIGN_DEATH (if implementation is moved to all classes)
TF_COND_TMPDAMAGEBONUS
TF_COND_NOHEALINGDAMAGEBUFF
TF_COND_SPEED_BOOST
TF_COND_SHIELD_CHARGE
TF_COND_DEFENSEBUFF (from an attribute)
TF_COND_SODAPOPPER_HYPE (scout only)
TF_COND_CRITBOOSTED_ON_KILL (from an attribute)
TF_COND_REPROGRAMMED (reimplement)
TF_COND_HALLOWEEN_GIANT
TF_COND_HALLOWEEN_TINY
TF_COND_RUNE_STRENGTH
TF_COND_RUNE_HASTE
TF_COND_RUNE_REGEN
TF_COND_RUNE_RESIST
TF_COND_RUNE_VAMPIRE
TF_COND_RUNE_REFLECT
TF_COND_RUNE_PRECISION
TF_COND_RUNE_AGILITY
TF_COND_AFTERBURN_IMMUNE
TF_COND_RUNE_KNOCKOUT
TF_COND_RUNE_KING
TF_COND_RUNE_PLAGUE
TF_COND_RUNE_SUPERNOVA
TF_COND_IMMUNE_TO_PUSHBACK (allow usage without 51)