GMS2 flag spam

[Jacky720]

Which component should be improved?

Lib

Describe your feature suggestion in more detail

Because GameMaker no longer updates the version number stored in data.win, the mod tool currently uses a series of 7 (soon to be 8 with #1043) boolean values: GMS2_3, GMS2_3_1, GMS2022_1, etc. Having so many variables is largely redundant and makes it more difficult to solve #929. These, and all references to such, should be condensed into one value; perhaps a version enum, or expanding the existing version functions.