There is a simple mod for that added into The Reunion, which I have included in the 7th Heaven Catalog as well. It uses Ctrl + S to skip cutscenes, however it's not perfect. In some cases, music won't immediately play after the skip until you enter a battle/exit a battle or move to another field scene. Also, if you do the skip too quickly, I've sometimes run into the screen going black but the game still running as normal behind the blackness.