[KotOR] Swoop Bike Upgrades 1.0.0

This modification comes from a (very reasonable) request made by Snigaroo, lamenting the fact that in the original game it's not possible to improve the performance of the game's swoop bike despite evidence that upgrades should be available. I introduced two of them and made them available in two different stores. They can be purchased to help those who struggle to make good times on Tatooine's and Manaan's race circuits. They don't come cheap, but they are certainly a great asset for any aspiring swoop racing champion.