add web app & add concurrency

web/vite.config.ts

@@ -0,0 +1,15 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+import tailwindcss from "@tailwindcss/vite";
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [
+    tailwindcss(),
+    react({
+      babel: {
+        plugins: [["babel-plugin-react-compiler"]],
+      },
+    }),
+  ],
+});