Add the ability to show dendrites outline when doing soma reconstruction

It would be great if there was an option to see the dendritic outline when doing soma reconstruction, something like this:


When clicking on the little box, one could jump between seeing the dendritic outline to seeing only the soma.
Thanks!

Review the soma reconstruction workflow and the linked example image to understand the requested display states. Add an option that switches between showing the dendritic outline and showing only the soma, then verify that the control changes the reconstruction view as described.

Written by the indexing model from the issue text.