feat: establish frontend foundation

vitest.config.ts

@@ -0,0 +1,10 @@
+import react from "@vitejs/plugin-react";
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+	plugins: [react()],
+	test: {
+		environment: "jsdom",
+		setupFiles: "./src/test/setup.ts",
+	},
+});