Example of how to create a data portal in 5 minutes (#769)

* [example][m] - start of a simple-example

* Empty-Commit

* [simple-example][sm] - change from repos.json to datasets.json

* [example][m] - changed styling and added octokit

* [build][sm] - fix build

examples/simple-example/lib/loadUrlProxied.tsx

@@ -0,0 +1,11 @@
+import axios from "axios";
+
+export default function loadUrlProxied(url: string) {
+  // HACK: duplicate of Excel code - maybe refactor
+  // if url is external may have CORS issue so we proxy it ...
+  if (url.startsWith("http")) {
+    const PROXY_URL = "/api/proxy";
+    url = PROXY_URL + "?url=" + encodeURIComponent(url);
+  }
+  return axios.get(url).then((res) => res.data);
+}