Resolve "Add toolbar button to start ArViz Godot"

Closes #55

See merge request ArmarX/ArmarXGui!74

Fix/rename coin3d to coin

See merge request ArmarX/ArmarXGui!73

Add button to close unavailable packages in the scenario manager. Add hint in...

See merge request ArmarX/ArmarXGui!72

Add button to close unavailable packages in the scenario manager. Add hint in log if that is relevant

Show labels next to favourite widget icons in toolbr

See merge request ArmarX/ArmarXGui!71

New example can be found at ArmarXGui/applications/RemoteGuiExample

This adheres now to Core issue 23

see: https://stackoverflow.com/questions/46114214/lambda-implicit-capture-fails-with-variable-declared-from-structured-binding
or
https://stackoverflow.com/questions/50799719/reference-to-local-binding-declared-in-enclosing-function?noredirect=1&lq=1