Draft for review. This specification isn't authoritative until the Clone Hero and YARG developers have approved it, and scan-chart 9.0.0 isn't released yet.
function parseSongMetadata(files, options?): Promise<{ issues: readonly Issue[]; metadata: SongMetadata;}>;
Reads a song folder’s metadata and the issues with its song.ini and chart file names, without reading the notes:
only song.ini and the .chart[Song] section are read.