Similar to the "Mark as" Tracker add-on, but for custom labels
stored as files in ~/config/settings/Mail/labels.
* Sets the MAIL:label file attribute.
* The pop-up menu with all available labels also has an item to
remove a currently set label from an email, and to open the
labels folder to "Manage labels…" (add, remove, rename etc.).
* Added File_Mail_label icon to distinguish from the "Mark as"
add-on icon. It's supposed to be a narrow post-it as label…
"Mark as" Tracker add-on:
* Remove custom statuses from the "Mark as" Tracker add-on. That's
what the new labels were introduced for.
Change-Id: I912a747156da3538457f622c1e2b163700c0c7eb
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10539
Reviewed-by: nephele nephele <[email protected]>