Goosenecks Attach to Bumper Pull 1.0

Allows Goosnecks to Attach to Bumper Pull Hitches of the D series
adds ball hitch for goose and drop hitch for goose

Some guy on a Facebook group wanted this so I did it in 5 minutes lol

Uses game assets for model, adds a new jbeam, super simple enjoy

as pointed out by Ainz Ooal Gown someone has already done this (https://www.beamng.com/resources/bumper-pull-gooseneck.34300/) but i didnt look to see before hand, but there is a difference, where his works just for the games gooseneck (as it changes a coupler on the trailer side) mine is a new hitch itself so itll work for any and all mod goosenecks as well, so same concept, spurred from as it seems the same post on facebook, we just went about it differently, either way glad to see it