well, for sure technically it's possible - after all, we have something similar in 2.2.2-alpha (
https://github.com/LibreCAD/LibreCAD/releases/tag/2.2.2_alpha-latest) in Entity Info widget.
As for mass selection and export - no, so far there is no such a functionality at the moment - mainly because it's not clear which exact format is needed and, basically, how that output will be handled further (usually such exports are useful for further automated processing).
Actually, it's not a technically complex things to implement as we have good basis internally, and so it might be that I'll add this feature in the future if this will be really needed - at least, I've noted this.