Enhancement: Adjust width of nwg-panel by percentage

[thesaigoneer]

The current width of nwg-panel has two basic variables:

1. Automatic > where the panel automatically adjusts to the width of the display
2. Manual > enter a number in pixels so a semi-floating status of the panel can be achieved

I prefer a semi-floating panel. When switching displays (laptop=1920x1080, external display 2560x1440) I currently adjust the panel-width (see manual pixel width.png (2550 width)).
It would be nice if the panel width could be entered as a percentage of the display width (i.e. 98%), so it adjusted automatically.
Thanks for looking into this.

Sysinfo:
nwg-shell 0.5.42
nwg-panel 0.9.52
CachyOS 6.12.1-2
Hyprland 0.45.2

[nwg-piotr]

This should not be difficult. I'm not sure what the config form should look like, but I'll try to come up with something.

[thesaigoneer]

OK mate, would be nice. No urgency!