Add @Galaxy102 as a contributor

Author: snipe

.all-contributorsrc

@@ -3136,6 +3136,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "Galaxy102",
+      "name": "Konstantin Köhring",
+      "avatar_url": "https://avatars.githubusercontent.com/u/18245993?v=4",
+      "profile": "https://www.galaxy102.de",
+      "contributions": [
+        "code"
+      ]
     }
   ]
 }