Player Motion

Huge shoutout to nedraw from the minecraft commands discord for doing most of the heavy lifting for this release!

• Completely resolves incompatibilities with (terrible) server modding platforms like Paper.
• Much lower complexity; easier to maintain/update!
• Much more efficient; easier on server TPS!
• Works on peaceful mode!
• Now cancels launch function if the player is on a mount.
• Near-perfect launch power parity with the previous method.