Labeled arrow annotations

haasal

I think a arrow (in extension among other shapes) with an optional label would be a really nice. I have created an image to illustrate my idea.
I wanted to ask if there is a plugin that enables that. In case there is not I would be happy to try to implement this myself into Zotero.

https://s3.amazonaws.com/zotero.org/images/forums/u15980127/okqp5akjggrxbcztio0d.jpg