[Smooth Shader] SSJ Goku (Mini) Preview

Just a little preview to show this is actively being worked on. This will be out once I fix SSJ4's goku materials not rendering, since they're packaged together. After that I plan to do Vegeta (Mini) and then finish tidying up the U6 Saiyans (Kale, Caulifla, Cabba, Kefla) for a public release.