chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

app/scenes/Logout.tsx

@@ -0,0 +1,11 @@
+import * as React from "react";
+import { Redirect } from "react-router-dom";
+import useStores from "~/hooks/useStores";
+
+const Logout = () => {
+  const { auth } = useStores();
+  auth.logout();
+  return <Redirect to="/" />;
+};
+
+export default Logout;