chore(frontend): scaffold Nuxt application

frontend/vitest.config.ts

@@ -0,0 +1,9 @@
+import vue from '@vitejs/plugin-vue'
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  plugins: [vue()],
+  test: {
+    environment: 'happy-dom',
+  },
+})