Fixed the accept function in the 'VisitRequest' class by adding teleportation to the island of the target. Additionally, validation checks for this were added. Specifically, it now verifies the existence of both the player and the requested island before carrying out the teleportation command.
Updated the Player Experience Display in the UpgradesGUI to show both the current experience of the player and the experience required to level up. This provides a clearer oversight for players on their progress towards the next island level. This changes only affects the user interface.
* Add IslandTop command with refresh cooldown
The "IslandTop" command has been added. This provides a sorted list of top-performing islands. A configuration for refresh cooldown was also added. The sorted island list is updated once the specified minutes in the configuration have passed to improve performance. The ranking display for the player's island is highlighted in green text.
* Update IslandTop command
On plugin startup the IslandData is now loaded in. IslandData was moved to its own file and gets updated when a new island is created or when one levels up. The IslandData gets deleted when the owner leaves the island, destroying it.
