Feature request: Display node id in the right panel

[jeanmatthieud]

Hi,

As the editor is quite simple (which I appreciate for my needs), I sometimes need to manually edit the JSON output to move certain blocks, since this isn't always possible through the editor interface.
I would like to be able to view (or copy) the node ID in the editor's right panel to identify it more easily and quickly in the JSON tree.

Thanks for this awesome tool!

[RexYao97]

because it is a json format, i think it can be easy to render with a tree