extended contextual action icons in property editor

I think it would be great to add a specific icon for aliased and animated properties in the editor, in the same way we show bindings. I have added the two icons to the font (would need to add the colors to the theme at some point as well.) The new icons have the ids: animatedProperty & aliasProperty

I think they should follow the same behavior as the bindings, so they remain persistent in the UI when applied.

This would also close this bug report:

https://bugreports.qt.io/browse/QDS-372