Add preliminary magic for SketchUp files. Closes: #903693

debian/debian-extra-magic

@@ -1,2 +1,12 @@
 
 # sorted by Debian bug report number
+
+
+# SketchUp files
+# https://bugs.debian.org/903693
+# https://bugs.astron.com/view.php?id=10
+
+0   string  \xff\xfe\xff\x0e\x53\x00\x6b\x00\x65\x00\x74\x00\x63\x00\x68\x00\x55\x00\x70\x00\x20\x00\x4d\x00\x6f\x00\x64\x00\x65\x00\x6c\x00  SketchUp Model
+!:mime      application/vnd.sketchup.skp
+!:ext       skp
+>>>>>>> 2a2fa80... Add magic for SketchUp files. Closes: #903693