SongPack for StepP1+ 2.0

Made to coincide with the release of StepP1+ 2.0 - https://github.com/rayden-61/stepp1-plus/releases

This chart pack has a lot of tweaks and exclusive metadata meant to be read by StepP1+. Difficulty Levels are adjusted to Phoenix 1.07 standards, but the steps themselves haven't been adjusted yet with the modifications from Phoenix, just the metadata.