gta3: add asl features from old splitter to new

[leguaan]

Collectibles etc, might also work on this when I get home

[zoton2]

Main issue I have with the old autosplitter code is that back then there was no autosplitter settings in LiveSplit so it either guessed settings based on your category names or you had to edit the file itself, which I want to not do.

[leguaan]

Yeah, my idea is to just implement them as settings, similar to KZ's vc splitter