PrintVault Desktop v0.2.22

Share models straight to the macOS share sheet.

Asked for by @howardaron-git, who kept being sent "can you send me that thing you printed" by family with their own printers, and was digging through folders in Finder to answer.

There is a Share button in the model view, and one on the selection bar, so you can cmd-click two or three models and share the lot. It hands the files to the normal macOS sheet, so AirDrop, Messages, Mail and anything else you have in there. Sharing a model means its printable files, or the archive if it is a zip you never unpacked.

macOS only. Windows has an equivalent but only through a much uglier interface, and Linux has no standard one, so the button is simply absent elsewhere rather than there and disappointing.

Large files go through AirDrop or a transfer service happily. Mail and Messages have their own size limits and will not.

Written without a Mac to test on, so thanks to @howardaron-git for checking it worked before it shipped. See #3.