OPItems

OPItems very small update

 - Added item: Piercer: Shoots throught Entities

 - Improved the Server-UUID-Generator

 - Sorted Configs into logical groups

 - Added a small bit of data-collection (see Additional Information) to decide the future ways of this plugin (e.g.: Is the 1.16 Version really used or is it feasible to update it to 1.17+?)

 - The Changelog will not be included in the plugin directly anymore. It will now display a link to the Changelog

 - Fix CursedSword Data deleting itself