RFA support

[Rast1234]

Add Red Faction: Armageddon support for existing mods and upcoming community patch

Things to implement

• vpp file tools. format is different from RFGR, see gibbed's SR3 tools
• file lists, hashes, paths, savegame locations
• build lego protagonist
• create savegame backup every time game is launched (RFA corrupts it frequently)

Investigate

• codebase impact. RFA will not need as many features and will not be supported as much. how many if-else forks do i need? don't want to make abstraction layers, libs, whatever
• peg files may be different from RFGR, but can just use manually prepared files
• game versions: steam, GOG, publicbeta. differences in stability and multiplayer. release ""re-enabler" style mods to switch between them, using as little files as possible

Presentation

• release separately or keep everything as single app? users may be confused
• keep same codebase or separate into repos? don't want to add if-else cruft, but don't want to make fixes twice
• try rufus-style .exe name switch if i keep it as single app
• separate name for new app, or keep it under one brand?