Move to OSC 8 hyperlinks with keyboard in mark mode

[lucy]

Description of the new feature/enhancement

Currently you can cycle through URLs in the scrollback buffer with tab and shift+tab in mark mode. It would be nice if this also worked with OSC 8 hyperlinks.

Right now this:

printf '\e]8;;http://example.com\e\\This is a link\e]8;;\e\\\nhttp://example.com\n'

only lets you shift+tab back to the plain text link, not the OSC 8 one, which you would have to navigate to using the arrow keys.