Coal powered golems and golem workshop.

The idea here is that golems will now require coal to move and attack. If this is added a new block (most likely a iron furnace will need to be added) the golem would be built the same way but the center block would be the new furnace. In villages a golem work shop could spawn this would have a chest with coal and iron and maybe rarer materials it would also have a villager engineer and a chance to spawned a golem that is out of coal. Last part would be that if a golem full sinks in water the flame in its chest or furnace would go out causing it to turn off. If this happens the player would either have to push or pull the golem out to just make a new one.