Add link to github in app drawer

lib/utils.dart

@@ -0,0 +1,11 @@
+part of 'main.dart';
+
+class haUtils {
+  static void launchURL(String url) async {
+    if (await canLaunch(url)) {
+      await launch(url);
+    } else {
+      TheLogger.log("Error", "Could not launch $url");
+    }
+  }
+}