Exthylanes Extra Stuff

Features:

• adds some math helper methods to get a block position from the Player's yaw and pitch.
• adds some Block and Item registering methods.
• adds a method to spawn Particles on every Client, withouth requiring Packets for syncing.
• adds Entity registry helper methods.
• adds Coordinate conversion helper to convert 3d Coordinates to 2d screen coordinates.

DOES NOTHING ON ITS OWN!!