Add initial project setup with Vite, React, and ESLint configuration

src/App.jsx

@@ -0,0 +1,8 @@
+export default () => {
+
+    return (
+        <>
+            <h2>Planspiele</h2>
+        </>
+    )
+}

src/main.jsx

@@ -0,0 +1,9 @@
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import App from "./App.jsx";
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)