Hey, this is great, thanks for sharing. One option you have for sharing is to put it on https://snippets.xwiki.org/ which is meant to share xwiki scripts. Would be awesome to have it there for now. You could also open a jira issue (type: idea or improvement) to suggest adding it to xwiki standard. It seems like a good idea to me. Only issue I see is finding non-conflicting keyboard shortcuts.
Thanks again