Allow for "copy" option

[selfire1]

Hi, thanks for this amazing plugin. I hope I might not have missed something but I think it could be powerful to not only allow for extracting notes but also for copying them.

When working with book notes, I often want to copy an extract into a new note and keep the selection where it is and including a link to the new note.

It would be great to have a {{content}} option, additionally to the {{new_note_content}}. That makes it possible to copy and format the content via a template while having it remain intact.