Highlight the bookmark lines/forms

[mrkam2]

It would help if bookmarks were indicated in the code. Maybe a dot on the left or a different background color. Maybe a dot next to a form. A bonus would be to have a tooltip with the bookmark text.

Slack: https://clojurians.slack.com/archives/C03KZ3XT0CF/p1706555093916009?thread_ts=1706384332.443059&cid=C03KZ3XT0CF

[mrkam2]

One possible design (as in the bookmarks extension in vscode):
(94 is the line number)