[1.19] PortalGun | Yes... Actually

- Momentum Conservation: Momentum only worked in certain portal configurations before because my math logic was busted and not all encompassing. My fault. Fixed now. - Yaw Adjustment: Implemented yaw adjustment. Now when you come out the other portal you'll be facing the correct direction as if you were actually using portals in Portal. - Portal Hit: Now you can walk into portals without looking directly at them. I accidentally performed math logic on a bukkit Vector without cloning it before and that offset the backend enough to make it not work. It's fixed now! - All source code is live on GitHub.