Local achievements

[CrispyBuns]

Can you add local achievements like this for example! https://retroachievements.org/forums/topic/14908

[Factor-64]

the issue with this is i would need to reverse engineer the RAIntegration parser as this is not the same format as normal achievements. If this is a WIP achievement set, the user who claimed the game can release them as unofficial achievements (which while not supported by RA2Snes can be very easily added).