Initial release - mostly functional renderer

Drizzle can render every room in the game. There may still be some accuracy errors however.

Actual editing UI is mostly not-there.

Includes tile and prop info so should work out of the box. Only includes SU_C04 project files, provide the rest yourself.

Only Windows supported right now, I can't be bothered to test a Linux build or something. It's 3 AM.

Run Drizzle.Editor.exe for UI. See also Drizzle.ConsoleApp.exe for console renders if you're into that sorta thing.