Add routing foundation to compliance-portal

Wire up react-router with a root layout route and an index home page,
following the single-arborescence conventions: pages live under pages/,
routes are built from AppRoute via routeFromAppRoute, and route bundles
load lazily behind a Suspense fallback.

Add the @probo/routes and @probo/react-lazy workspace dependencies that
the route setup relies on.

Signed-off-by: Émile Ré <emile@probo.com>

apps/compliance-portal/src/App.tsx

@@ -12,10 +12,10 @@
 // OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 // PERFORMANCE OF THIS SOFTWARE.
 
+import { RouterProvider } from "react-router";
+
+import { router } from "#/routes";
+
 export function App() {
-  return (
-    <main className="flex min-h-screen items-center justify-center bg-sand-1">
-      <h1 className="text-6 font-bold text-sand-12">Compliance Portal</h1>
-    </main>
-  );
+  return <RouterProvider router={router} />;
 }