Add support for PureRef files

[TechnicJelle]

Hi there! I love the app; it works very well!

I was wondering if it was possible to add support for loading in (and maybe saving as, too?) PureRef project files, so it's possible to work on a project on both PC and mobile interchangeably.

Oh, and another small thing that might be nice is adding that when you long press a button, a small toast message pops up next to it with the name of the button. I just had to look at the code to find the difference between the Save and Save As button.

[Ruin0x11]

Potentially. It would depend on how many incompatible fields there are in the .pur format that aren't in the default format. Also, since it's proprietary the format could change in the future. It would just mean some work to add an import/export feature, but I am busy with other things at the moment.

[SheepDomination]

Any chance for support to come ?