TODO: Merge Ryan-Myers/Racing_Splat with repo

[DavidSM64]

https://github.com/Ryan-Myers/Racing_Splat

Ryan got the code for the other 4 versions of DKR matching. Eventually, we will want to merge this with the main repo. His repo does not mess with assets, they are just binary.

Thankfully the assets are the same between US 1.0 and EU 1.0 (DKR version 7.7), as well as between US 1.1 and EU 1.1 (DKR version 8.0). Japan's (DKR version 7.9) assets are slightly different.

Ideally I'd like to move to using splat for the code, and then using the DKR assets tool to extract/build assets into the appropriate json files. I'm not going to go into it immediately, but sometime in the future.