Increase line with pop-up

[Bug Importer]

Simple increase line using pop-up

[Three-san (three-san)]

Originator: NO

Partially appropriate - Can't help but point out that the GUI component
for something like this could possibly be without too much effort designed
to be re/usable for, say, "Per-node interpolated line width" as well.
Hotkey(s) while hovering on canvas?

Of course, this on its own seems like a nice convenience.