Chrome paints and more!

Now building against SDL 2.0.16, in order to fix a new crash introduced with the previous version. The previous version was upgraded from SDL 2.0.12 to 2.0.15 in order to support PS5 DualSense Controllers. This seems to have caused a new crash on start-up for some specific device configurations.

But that's all fixed now. OH, and super awesome bonus surprise -- we also introduced a new car paint family, the Chrome Paints! Shiny, metallic, reflective, and oh-so-did-I-already-say-shiny, these new paints will blind your opponents with the awesome power of shine.

Enjoy.