Path finder

# Changelog

1.0.1

**Fixed**
- Mobs now properly count as "in combat" (and skip all optimizations) for 10 seconds after being hurt
- The config file was restructured delete your old pathfinder-common.toml and let it regenerate.

**Added**
- AI tick reduction for mobs far from every player: animals and monsters more than 48 blocks away re-think their goals every 4th tick instead of every tick, staggered so the work spreads evenly. They keep moving smoothly, mobs near you are untouched, fighting mobs are exempt, and mobs in water or lava are never throttled.

- Pathfinding throttle: at most 4 path computations start per tick, smoothing spikes like the villager dawn rush
- Search depth cap: runaway path searches give up sooner (failed searches are the expensive ones)
- Longer retry cooldown after failed pathfinds (60 ticks instead of vanilla's 20)
- Reduced path recomputation and brain ticking for idle mobs far from players