First Update for Icy Bois

There's a few additions or changes to the game. The most obvious is going to be the control scheme now ignoring left-stick for forward momentum, and instead moving that to right-trigger, and turn rate is slower when you're moving faster.

There are a few changes to track layout, additional sections, fixes for collision (still some issues), slightly better physics (you're less likely to launch off the track and will no longer get knocked around by pickups/collectibles. Difficulty is tweaked a bit too.