Use boilerplate/typescript for goals

After deploying the version of this application that built everything in the
browser, which originally was the impetus for the entire project, I learned that
the babel in-browser transformer won't work. I'm not sure why, but I need to
move on from this project and do other work.

I ported the code to my boilerplate/typescript, which works. Wahoo!

website/goals/src/index.tsx

@@ -0,0 +1,5 @@
+import React from "react";
+import ReactDOM from "react-dom";
+import App from "./App";
+
+ReactDOM.render(<App />, document.getElementById("mount"));