Adding Set Attackers/Predator

It'll be helpful for a lot of modders that want either custom or vanilla mobs to attack your mobs that you've made. For example Pillagers attack modded Golem. As of right now you have to set attack to target to initiate a battle, but what about a passive mob that becomes hostile when attacked, like a wolf, enderman, polar bear.

I think there should be a procedures in the "AI Goals" that allows us to set attackers/predators to our mobs that include vanilla, modded creatures, created mobs.

This will dramatically change modding for so many people that want passive/aggressive mobs without going through endless videos and code to do it.