Branch `broulik/gmenu-dbusmenu-proxy` of plasma-workspace
Tested `gedit` which supposedly only has a menu bar on Ubuntu, toggle actions (e.g. "Full screen" and "Overwrite mode" don't work right now)
{F5707116}
Tested LibreOffice 6 with `gtk3_kde5` platform plugin, should just work with regular GTK3 plugin
{F5707119}
I won't be able to add any icons to LibreOffice's menus as the action names are random ids assigned by it. In gedit I get some names like "open" and "save" I could map on our side
Applications not having a dedicated menu bar will at least show the top panel menu with Settings, About, and Help
{F5707121}
Does not work with Gimp or Inkscape as they aren't GTK3-based.