Backups in Ferrite archive a user's bookmarks, history, source lists,
and source names. Sources are not archived due to the size of the backup
increasing exponentially.
These files use the .feb format to avoid JSON conflicts when opening
the file in Ferrite. The backup file can be renamed to JSON for editing
at any time.
Add the Backport namespace to be used for ported features rather
than making a file for every iOS 14 adaptation.
Move history and bookmark creation to the PersistenceController rather
than individual functions.
Signed-off-by: kingbri <bdashore3@proton.me>