Examples: Add multimodal app (#2328)

examples/multimodal-demo/vite.config.ts

@@ -0,0 +1,13 @@
+import path from "path"
+import react from "@vitejs/plugin-react"
+import { defineConfig } from "vite"
+
+export default defineConfig({
+  plugins: [react()],
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+      buffer: 'buffer'
+    },
+  },
+})