feat: provide edito button to jump directly to the item in a repo

closes #115

public/config.json

@@ -65,5 +65,9 @@
       }
     ]
   },
-  "dateFormat": "MMMM YYYY"
+  "dateFormat": "MMMM YYYY",
+  "editLink": {
+    "radarLink": "https://github.com/AOEpeople/techradar/edit/main/radar",
+    "title": "Edit"
+  }
 }