Specific tab-bar support (i.e. bookmarking tabs rather than windows/frames)

I don't think we can do that already with burly : I'd love to be able to restore all (built-in tab-bar-mode) tabs from a frame.

I usually have one frame per "project", with several tabs open in each frames. Currently I have no way to save all tabs and their buffer/window configuration from a specific frame, then I can't close the frame when I'm not working on the project.