feat: add design system

src/routes/roulette/-/RouletteRoute.tsx

@@ -0,0 +1,11 @@
+import SectionSurface from "@components/surface/SectionSurface";
+import { Link } from "@tanstack/react-router";
+
+export default function RouletteRoute() {
+  return (
+    <SectionSurface>
+      Hello "/roulette"!
+      <Link to="/game">Game</Link>
+    </SectionSurface>
+  );
+}

src/routes/roulette/index.tsx

@@ -0,0 +1,3 @@
+import { createFileRoute } from "@tanstack/react-router";
+import component from "./-/RouletteRoute";
+export const Route = createFileRoute("/roulette/")({ component });