feat: bootstrap Vite and pnpm toolchain contract

vite.config.js

@@ -0,0 +1,10 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+
+export default defineConfig({
+  plugins: [react()],
+  build: {
+    manifest: true,
+    sourcemap: false,
+  },
+});