Fix vartheme subtheme does not use the toolbar top space issue as it was fixed from base theme

vartheme is providing a fix that applies a top padding to body via javascript to ensure that the toolbar is not overflowing content.

This fix is provided with "global-scripts" library (js/scripts.js) in vartheme. When creating a subtheme there is an own global-scripts library created in the subtheme but the script used in the subtheme does not provide the fix for the toolbar.

I think the script.js in subtheme should apply this fix too.

There is also something done about IPE tray padding in this script, that should probably put into the subtheme too.

I am providing patch that just copies these fixes to subtheme template too.

But maybe it would make sense to put this fixes out to separate library and inherit this from base theme? Since the global-scripts library is indicating to be a place for customizations?