Add Support to ignore MythicMobs-Entities

[Fly1337]

Added an option to allow AuraMobs to ignore MythicMobs-Entities since the custom_name option does not apply to client side nametags and therefore needs special treatment.

For more, GitHub Copilot is here to explain the changes lol (crazy feature, had to test it once):
This pull request introduces several changes to the AuraMobs plugin to add support for MythicMobs integration and configuration. The most important changes include adding new configuration options and methods to handle MythicMobs, as well as updating the MobSpawn listener to respect these new settings.

MythicMobs Integration:

• src/main/java/dev/aurelium/auramobs/AuraMobs.java: Added mythicMobsEnabled and ignoreMythicMobs fields, and updated onEnable method to initialize these fields. Added ignoreMythicMobs() and isMythicMobsEnabled() methods for accessing these fields. [1] [2] [3] [4] [5]

MobSpawn Listener Update:

• src/main/java/dev/aurelium/auramobs/listeners/MobSpawn.java: Imported MobKeys and PersistentDataType to check for MythicMobs entities. Updated the run method to skip processing if the entity is a MythicMob and ignoreMythicMobs is enabled. [1] [2] [3]

Configuration Changes:

• src/main/resources/config.yml: Added ignore_mythic_mobs configuration option under custom_name section.

[Archy-X]

Looks good to me