Leaderboard Support

[Skullians]

Is your feature request related to a problem?

the absence of the feature

Describe the solution / feature you'd like.

leaderboard support similar to vanilla.
This will in the future require for a command system to be implemented so leaderboards can actually be controlled.
Minimessage integration (#107) will also make use of this systen

Alternatives you've considered.

No

Additional Context

👍

I have confimed that...

• ... such a feature does not exist already.
• ... I ticked all the boxes without reading them
• ... such a feature request has not been submitted already.