Forking older versions of a note

[kirillt]

When we have sequence of versions of a note, we can view or remove older versions but we also need UI elements to fork older version into new note. Fork means that we have several entries in version storage (.ark/versions) with the same parent.

E.g.

3155416 -> 7705444
5839051 -> 8921986
3155416 -> 9763586

Here, notes with id 7705444 and 9763586 have the same parent with id 3155416.

A button is needed in versions list, which allows to edit a version into new note.

[kirillt]

Attached bounty: https://gitcoin.co/issue/29634