Also backs up visibility flags "File extension" and "file"

[porg]

SetFile -a allows to set various file flags for HFS+ and APFS

• E | e Extension is hidden (allowed on folders)
  • It's also commonplace to toggle this in the Finder
    • Either by ticking the checkbox "Hide Extension" in the info dialog
    • Or implicitly by renaming a file and removing the ".extension" portion from the filename.
  • Many users make use of this to customize on a file or folder basis how the Finder shows file extensions.
    • I'd love to backup/restore/copyfrom this with osxmetadata
• V | v Invisible (allowed on folders)
  • Still supported in contemporary macOS
  • More common meanwhile to follow the UNIX convention by adding a dot "." at the beginning of the filename
  • If you don't want to support it, I'm ok with it. But some may would like it included.

Proposing that these attributes get supported by:

• Add --include --exclude to --restore, --copyfrom #76
• selectable as: all-file-flags, file-visibility, file-ext-visibility,

[RhetTbull]

I don't know how to access these programmatically but if I can figure it out, will look at adding them.