Add .babelrc file

Author: joshpoll

sandpack-react/src/templates/runtime/solid.ts

@@ -31,6 +31,13 @@ render(() => <App />, document.getElementById("app"));`,
   <script src="src/index.tsx"></script>
 </body>
 </html>`,
+    },
+    "/.babelrc": {
+      code: `{
+  "presets": [
+    "babel-preset-solid"
+  ]
+}`
     },
     "/package.json": {
       code: JSON.stringify({