1.20.2 Support & Folia Support

Updated GitHub repository.
Downgraded to Java 11.
Updated to 1.20.2 API.
Updated all dependencies.
Added full Folia support.
Rewritten reload command.
Removed inline variables.
Refactored console messages.
Rewritten server version checking system.
Fixed Folia multithreading checks.
Moved hooks to external classes.
Made all teleports async.
Changed plugin version to 2.5.4.

ALL USERS MUST REGENERATE OR UPDATE THEIR CONFIG.YML OR THE PLUGIN MAY CRASH!