enh(ui): change toolbar layout on touch friendly apps

Description

These changes fix some issues with touch-friendly apps.

• The toolbar buttons are now bigger in touch-friendly apps by default (48*48 instead of 32*32)
• When using SStatus with form = circle, the circles are now actually circular for any size
• The slider groove is now bigger in touch-friendly apps to make it easier to use

Closes #1068 (closed)

How to test it?

• Launch SightViewer. There is no changes (SightViewer isn't a touch-friendly application)
• Launch SightViewer with touch_friendly=true. The toolbar buttons should now be bigger.
• Explicitly set the icon size of one of the toolbar in SightViewer. The icons for this toolbar changed.

• Launch ExDetectCamMotion. The status circle looks like a circle.
• Change the size of the status circle. The status circle still looks like a circle.

• Launch ExSParameters. The new slider look is active.

Some results

Additional tests/tasks to run

• Test on a touchscreen.