Mob AI Tweaks

-Door zombies' doors can now be destroyed. Maximum health of the held door can be modified in the config.

-Door zombies are now slower and more resistant to knockback, stats can be modified in the config.

-Doors held by zombies should now despawn correctly when the zombie holding it does.

-Doors held by zombies now have some animations to them when the zombie attacks or takes damage.

-Fixed the particle spawning positions of door breaking particles for door zombies.