Allow users to scale the user interface, or atleast the toolbar, with especially touchscreens in mind.

https://forum.videolan.org/viewtopic.php?f=7&t=139560

Some users like a small toolbar, some have a touchscreen and large fingers. It would be helpful if users could decide for themselves how big they need their toolbar. A simple choice between small, normal and large would probably suffice. This option may or may not be added directly to the tools menu, so it's easy to find.

changed milestone to %Qt redesign (VLC 4.0)

added Component::Interface: Qt Type::feature labels

implemented in VLC 4.0 since 37f0ca02

closed

added Status::fixed label

changed milestone to %4.0