I think having this functionality as an add-on works quite well and keeps out cross-dependencies between lightning and addressbook.
However, I would propose to show a hint on recommended add-ons which is shown whenever installing/updating lightning (at least).
I think having this functionality as an add-on works quite well and keeps out cross-dependencies between lightning and addressbook.
However, I would propose to show a hint on recommended add-ons which is shown whenever installing/updating lightning (at least).