Add support for a field to be linked to a value updated by code outside the object itself. Mark the linked field by using a background color and icons for linked/unlinked state.
The auto value states is set as attributes in the project xml file.
Add reference implementation in cafTestApplication, see Fwk/AppFwk/cafTests/cafTestApplication/MainWindow.cpp
* Tree View Editor: Avoid sending notification if selection is unchanged
* Use std++17 in test solution
* Move icons to icon factory
* add support for creating QIcon from SVG text string
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