1.14 Fix | If using the "showForOwnerOnly" feature on 1.14 you'd be spammed with an error stating that a class is missing. This was a class included in the Spigot jar itself, however, it was removed in 1.14. ProtocolLib relies on this but hasn't updated to include it to be compliant with 1.14. To get this update done quickly I've decided to include a heavily minimized version of the library and include it directly in GPS for ProtocolLib to use. This solves the issue and the "showForOwnerOnly" feature now works as intended on 1.14 again.