Add vercel.json for default React vite.js template (#755)

Fixes #741 
See: https://vercel.com/docs/project-configuration#rewrites-examples

e2e-tests/snapshots/copy_app.spec.ts_app.txt

@@ -5844,6 +5844,18 @@ export default {
 }
 
 
+=== vercel.json ===
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+  "rewrites": [
+    {
+      "source": "/(.*)",
+      "destination": "/index.html"
+    }
+  ]
+}
+
+
 === vite.config.ts ===
 import { defineConfig } from "vite";
 import dyadComponentTagger from "@dyad-sh/react-vite-component-tagger";