Problems:
* The Bukkit registration of commands doesn't seem to work with the new `paper-plugin.yml`
* The new `paper-plugin.yml` is required to fix loading issues.

* Because this is not supported by paper!

* That is basically everything, but might be more separated in the future.
* Register Commands dynamically, so they work with the `paper-plugin.yml` in place.
* Removed WolfyCoreBukkit.getInstance, as that would interfere with WolfyCorePaper. (Use WolfyUtilCore.getInstance instead!)
* Replaced WolfyCoreBukkit usages with WolfyUtilCore