potioneffect as a condition

[Blackarr]

Is your feature request related to a problem? Please describe. Potioneffect as a condition

Describe the solution you'd like COW:

• trigger: RIGHT_CLICK tool: WHEAT --->haspotioneffect: NIGHT_VISION drop: DENY

[CoolLord22]

Add support for attacker/victim potion effects; allow entity / player to be target / agent.

Removing implemented label until this is added as well.