Add a picture of a lynx

This is added for the purpose of functioning as an example for clipping.
It is licensed under the Unsplash license, which permits free use, for commercial and non-commercial applications, with or without attribution.
Also, it is just very pretty, and a good example image.

Author: omentic

NOTICE

@@ -997,3 +997,22 @@ The GUST Font License applies to:
 % https://www.latex-project.org/lppl.txt and version 1.3c or later
 % is part of all distributions of LaTeX version 2006/05/20 or later.
 ================================================================================
+
+================================================================================
+The Unsplash License applies to:
+
+* "A lynx standing in the middle of a forest" in files/images/lynx.jpg
+  Copyright 2024 Pascal Bullan (@jetztabertempo)
+  Via Unsplash
+  (https://unsplash.com/photos/a-lynx-standing-in-the-middle-of-a-forest-6njkAeHHMOE)
+
+The Unsplash License
+
+Unsplash grants you an irrevocable, nonexclusive, worldwide copyright license
+to download, copy, modify, distribute, perform, and use images from Unsplash for
+free, including for commercial purposes, without permission from or attributing
+the photographer or Unsplash. This license does not include the right to compile
+images from Unsplash to replicate a similar or competing service.
+
+URL: https://unsplash.com/license
+================================================================================