erste Fassung von Client und Server rein

client/src/App.tsx

@@ -0,0 +1,10 @@
+import { Tldraw } from 'tldraw'
+import 'tldraw/tldraw.css'
+
+export default function App() {
+  return (
+    <div style={{ position: 'fixed', inset: 0 }}>
+      <Tldraw />
+    </div>
+  )
+}