Generate sheet id bin outside of leveldesign

[kaetemi]

Generate a separate text format file under leveldesign for each sheet extension to replace sheets.txt, use this as the reference for retaining sheet ids. (In a folder named sheet_id, name each file extension.tsv.)

Move sheet_id.bin to the leveldesign pipeline output folder.

Tool should automatically upgrade if old sheet_id.bin exists in leveldesign, and still support old method.