chore: add defu

Author: hywax

Diff for: package.json

@@ -16,6 +16,7 @@
   "dependencies": {
     "@vueuse/nuxt": "^10.7.0",
     "consola": "^3.2.3",
+    "defu": "^6.1.3",
     "yaml": "^2.3.4"
   },
   "devDependencies": {
@@ -43,4 +44,4 @@
   "lint-staged": {
     "*.ts": "yarn run lint"
   }
-}
+}