Support bundle of pkpass files (.pkpasses)

[TheLastProject]

.pkpasses exists, which is basically a zip file of multiple pkpass files with mimetype application/vnd.apple.pkpasses. See https://developer.apple.com/documentation/walletpasses/distributing-and-updating-a-pass#Create-a-bundle-of-passes for more details.

This doesn't seem very common, but would be good to support.

It would be important to think about how to deal with this (perhaps skip the edit activity entirely in this case?)