Initial setup of frontend and backend

frontend/src/App.tsx

@@ -0,0 +1,19 @@
+import { Routes, Route } from 'react-router-dom'
+import { Layout } from './components'
+import { Home, GameSelect, Dashboard, Encounters, Rules } from './pages'
+
+function App() {
+  return (
+    <Routes>
+      <Route path="/" element={<Layout />}>
+        <Route index element={<Home />} />
+        <Route path="games" element={<GameSelect />} />
+        <Route path="rules" element={<Rules />} />
+        <Route path="dashboard" element={<Dashboard />} />
+        <Route path="encounters" element={<Encounters />} />
+      </Route>
+    </Routes>
+  )
+}
+
+export default App