Disk usage visualization

[boniek83]

Is your feature request related to a problem? Please describe.
I'm using filebrowser as PV browser in kubernetes. PVs sometimes fill up and I don't know what takes up space.

Describe the solution you'd like
It would be great to get disk usage visualization like Filelight under KDE.

Describe alternatives you've considered
Running terminal commands like ncdu works, but disk usage visualization in GUI would be easier to use.