Ravagers Of The Wild

Adds varieties of naturally spawning ravagers.

For those seeking a challenge.

For 1.20.1:  The Wild Ravager spawns on the surface.  The Dark Ravager spawns in caves at Y<0 and is IMMUNE TO PROJECTILE DAMAGE.

For 1.21.1 and up: wild ravagers spawn in a variety of sizes.  The smaller ones are faster with less health; the larger ones slower with more health.

When deciding whether to spawn a ravager the mod checks if there are any ravagers nearby.  The distance check can be adjusted in the config.

Do not set to 1 unless you want the world to be basically unihabitable!

Warning!  Ravagers do not despawn.  You spawned them now you deal with them.