Clean up of PS2/GOG splitter code
Launch of openMSX autosplitter and splitfiles!
Consider this an early untested version where splitting might not work depending on game version.
MSX splitter features:
- Splitting on important screen changes (similar to PS2 checkpoint system)
- states for health, variables for completion in early draft
TBD: finish MSX splitter with boss completion and finalizing hundred percent tracker.