Mob AI Tweaks

-Updated minimum required fabric version to 0.16.14.

-Added wither_boss_drops_netherite config, which allows the wither to drop netherite scrap on death. True by default.

-Added whitelists/seats_hostiles_can_escape, accepts list of entity IDs of vehicles a hostile mob can escape from if they ever get stuck in them.

-Added escapable_seats datapack tag that does the same as above. Contains only #c:boats by default.