Added wouter for hash-based routing

web/src/routes/NotFound.tsx

@@ -0,0 +1,2 @@
+const NotFound = () => <>NotFound</>;
+export default NotFound;

web/src/routes/Root.tsx

@@ -1,2 +0,0 @@
-const Root = () => <>Root</>;
-export default Root;

web/src/routes/RootRouter.tsx

@@ -0,0 +1,17 @@
+/* Wouter */
+import { Router, Switch, Route } from "wouter";
+import { useHashLocation } from "wouter/use-hash-location";
+
+/* Routes */
+import NotFound from "./NotFound";
+
+const RootRouter = () => (
+  <Router hook={useHashLocation}>
+    <Switch>
+      {/* Fallback (eg. 'Not Found / 404') */}
+      <Route component={NotFound} />
+    </Switch>
+  </Router>
+);
+
+export default RootRouter;