Prosthetic distribution across the world!

All characters that didn't already have a chance to spawn with prosthetic or, while being powerful, spawn with low quality prosthetic, now have a chance to have robotic limbs.

Excluded: Traders, Recruits, Slaves, Pacifiers, Surgeons, Barman, Mercenaries, Fences, Broken Skeletons,

We follow these guidelines for spawn chance:

* 2%: Civils, Poor people, and low rank (5+ combat stats).
* 4%: Rich people and mid rank (30+ combat stats).
* 6%: Veterans and Captain rank (50+ combat stats).
* 8%: Skeleton Bandits, the alike, and Elite rank (70+ combat stats).
* 10%: Skeletons and Elite+ rank (90+ combat stats).