Feature request: save multiple tabs as one playlist

[AngryPhantom]

Steps to reproduce the problem

Add some tabs with several tracks in each of them. Save the playlist in any available format.

What's going on? Describe the problem in as much detail as possible.

The player saves only the tracks in the current tab.

Information about the software:

Deadbeef version: 1.8.8 OS: Debian Bullseye, Void Linux etc.

This is a feature request, actually, not a bug report. Is it possible?

Thank you in advance.