minor update to tail

Compatibility for build 42

Update the idle model to have hands out at an angle. no more paws in pockets

Removed animation, will rework later

Changed idle animation to work with the costumes

More clear configurable spawn percentage settings for the zombie spawn and the loot spawn.

Added sandbox option to configure rarity. It goes from about 0.1 percent to 1 percent for wild zombie spawn.

updated the spawn rate to be super low. will make configurable soon