Memory leak, stop using old API

[masmc05]

Please report bugs on the discord!

Join by clicking here link isn't working, maybe expired invitation?

As you can see here, your plugin (well, not plugin, but it's loaded as a plugin) don't clean entity meta so it starts to use too much ram

Since you support only version above 17, you of course will support the api added in spigot 1.14, the PDC, where you can store the data, and it will be unloaded with the entity, and loaded again when loading the entity, not filling up the RAM