gnu: Add libgnome-games-support.

* gnu/packages/gnome.scm (libgnome-games-support): New variable.

gnu/packages/gnome.scm

@@ -3073,6 +3073,20 @@ queries upon that data.")
 GNOME Games, but it may be used by others.")
     (license license:lgpl3+)))
 
+(define-public libgnome-games-support
+  (package
+    (inherit libgames-support)
+    (name "libgnome-games-support")
+    (version "1.2.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "mirror://gnome/sources/" name "/"
+                                  (version-major+minor version) "/"
+                                  name "-" version ".tar.xz"))
+              (sha256
+               (base32
+                "1rsyf5hbjim7zpk1yar3gv65g1nmw6zbbc0smrmxsfk0f9n3j9m6"))))))
+
 (define-public gnome-klotski
   (package
     (name "gnome-klotski")