
If I have a png, how do I build it into nvidia-settings?

    - run `gdk-pixbuf-csource --struct --name=foo_pixdata foo.png > foo_pixdata.h`
    - convert the pixel_data array embedded in the foo_pixdata structure
      to a stand-alone guint8 array (see existing images as a reference), add
      it to the top of the header file and reference it in the structure.
      *** TODO: this should be automated or folded into the first step somehow. ***
    - add to the BannerArtworkType enum in image.h
    - include foo_pixdata.h in ctkbanner.c
    - add an entry to the ArtworkTable[] in ctkbanner.c:select_artwork()
    - add an entry to the .../image_data/Makefile.inc
