feat(pbf): add axios get call to home page

pbf/app/pages/home.jsx

@@ -1,12 +1,35 @@
-import React from 'react';
+import React, { useState } from 'react';
+import axios from 'axios';
 import Hello from '../components/hello';
 import '../style.css';
 const Home = () => {
+    /*storage*/
+    const [vehPos, setVehPos] = useState({});
+    /*fetch vehPost in a JavaScript function*/
+    const getVehPos = async () => {
+        try {
+            /*TODO handle errors: https://www.valentinog.com/blog/await-react/*/
+            let url = 'https://soll.vbn.de/vehicle-positions';
+            const res = await axios.get(url);
+	    //TODO remove debugging
+            if (res.data) {
+                console.log('getVehPos() res.data: ', res.data);
+            } else {
+                console.error('getVehPos() res.data unavailable ');
+            }
+            /*set state*/
+            setVehPos(res.data);
+        } catch (err) {
+            console.error('err.message: ' + err.message);
+        }
+    };
+
     return (
 	<>
 	    <h2>Home</h2>
 	    <h3>(React.js Lambda Function Component)</h3>
 	    <Hello msg="Hello World!" />
+            <button onClick={getVehPos}>getVehPos</button>
 	</>
     );
 }