DropPartySpawn

Fixed an error with the appearance of drops on the surface:

Previously, in the underground arena, the drop could appear from above, now it always appears in the players' visibility zone.

Optimized the random drop point generation function:

Now the random point is always within the radius

Improved integration with the rights system (LuckPerms):

All DropParty commands now correctly check rights.

In plugin.yml, the rights are described in detail and are easily configured via LuckPerms.