Show first image in org-mode in obvz as well, if possible placed at center of visualization/screen

[michaelsjackson]

Main use case would be, having org-mode files with only a single image file for example, which you want to comment via its relationsship links, parent,child,friend. Having the image in the center, arrows going out, then enabling text, you could nicely comment any image. Directly using org-mode, org-brain, obvz.

If there are more than one image in the org-file, the other images should be ignored, not to clutter the visualization, so the idea is, one image (= first image) per node.