Restunts stock TempleOS CD

Filesystem: native TempleOS RedSea CD, written by RedSeaISO.
GAME.ISO.C was extracted byte-for-byte and named RESTUNTS.ISO.
This is a code-only port CD, not a replacement operating system.
CD contains 106 files; CONTENTS.TXT records their SHA256 hashes.
Build-system ISO SHA256: 5d0fc944e5d89c155c0fc17c148646715bc1db6fa5750c0b913772cfec19ba26
No original game data is included. DATA_CD_TOOL creates a separate
private CD from the player's own game files; do not distribute that CD.
