[Feature] Recognize multiple disk images in single ZIP file

[midwan]

If a single ZIP file contains multiple disk images, parse them all and send them to the DiskSwapper feature

[giantclambake]

Further to this, it would be handy if the DiskSwapper panel had a 'Create ZIP file' button, to create a .zip archive of all the floppy images currently loaded. This way, users could easily make their own ZIP files containing multiple disk images, to better make use of this feature =)