JSON export/import

[FluffyDiscord]

Is your feature request related to a problem? Please describe.
Nope

Describe the solution you'd like
Option to export and import everything to/from a json and image files.

Describe alternatives you've considered
None

Additional context
With this feature anyone can make powerful GUIs and also multiple people can work on the same theme as merging would become a thing.

[nptr]

I agree that import & export is a necessary feature. It is somewhere on my list, although no due date.
As textual format is intriguing as well. I can probably replace & repurpose the style info export for one half.