Move unused nodes to a different folder/tab

**Describe the problem you have/What new integration you would like**
I had a quick look and can't see something like this requested. Apologies if it has been requested before.

I have a whole bunch of nodes which I have configured previously, but they are not online currently or they are place holders for future projects. These show up as offline devices. It would be great if these nodes could be moved to a different folder of sorts or have different tabs on the main window. You can then move these nodes off the main page into a different tab. This will make the main page a bit tidier.