List variables

For the next step with variables inside of MCreator I think a cool idea would be to add variable lists.

 Inside of the variables section there would be a new button called new list. It would then ask for which types and how many like: int, bool, int,

There would then be procedures like get bool value # of list list and get number in order # of list list. So you could have a set of values so if you make for example a magic mod you can keep track of what has been obtained via a list of bools.

This would keep the variable tab less cluttered and could be used for multiple other things like tracking stats.