Feature request: Ability to extract individual files from a .vpx file

[jueank]

As an example, I would like to extract only the gamedata.json. This could also be implemented in a way to omit all large files (images, sound and potentially gameitems folders) and only extract everything else (say: the files in the base folder of the extracted table, which are typically small in size). Or alternatively allow wildcards to specify what to extract.