[Feature Request] Particle option on mob spawn

To make dungeons more lively, Mythic Dungeons could potentially have an optional option in config.yml that allows you to play a specific particle when mobs spawn instead of always coding it in your mythic mobs (People also won't always be using mythic mobs for their dungeons, even though they really should)

Proof of concept particle effect: java_dKVQ6o24MR