Added BPS Patch Alternative

I've added a BPS format version of the patch; I've verified this works with RomPatcher.js, a browser-based BPS patcher (for anyone wondering, all files stay local - it doesn't have to upload/download them).

I'm also planning to submit further improvements to the realtime ScummVM version at some point; hopefully it may assist with issues found in other games too... I don't have a solid timeline; it's in the pile of projects though! =)