Create mapper to visualize owntracks data

mapper/src/index.js

@@ -0,0 +1,10 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+ReactDOM.render(
+	<React.StrictMode>
+		<App />
+	</React.StrictMode>,
+	document.getElementById('root')
+);