SNTSciview: Synchronize image being traced

[tferr]

@LTempel, @skalarproduktraum (cc'ing @kephale , @carshadi)

I finally tested sciview on the main branch (under java 11), and it is Awesome!!!
As you may recall, I always had a bunch of problems with intel graphics, but all those issues seem to be gone!

One thing that I think would be easy to implement is the ability to add the image being traced to the scene (currently SNTsciview adds the traced tree but not the image). The SNT (snt field on SNTSciview) has 2 methods to access the image being traced:

public <T extends RealType<T>> RandomAccessibleInterval<T> getLoadedData(); public <T extends RealType<T>> ImagePlus getLoadedDataAsImp() , so it should be trivial!?

Let me know if you want to tackle it, otherwise, I can try to look into it later in week

[LTempel]

Apologies for the late reply. I'm glad to hear that you are happy with the changes made.
I'd be happy to take a crack at this issue, if you haven't already.

[tferr]

It would be great if you could look into it. we did not have a chance yet to do so