GENERIC MONSTER SPAWNERS

Spawns monsters on its location when players get close (50).
if players are too far (50+) then despawn all enemies nearby, and reset its spawns.

specific tags mean it will spawn specific mon.
ex:
fallen_knight.lv1 = spawns a lvl1 fallen_knight.
etc.


usually used for special enemies such as Spirit Knights and Golems.

give @s allay_spawn_egg{EntityTag:{id:"minecraft:marker",Tags:["monster_spawner","monster_name.lvl"]},display:{Name:'[{"text":"monster spawner","italic":false}]'}}
