style: use flat eslint config

Author: wobsoriano

eslint.config.js

@@ -0,0 +1,4 @@
+// eslint.config.js
+const antfu = require('@antfu/eslint-config').default
+
+module.exports = antfu()

package.json

@@ -35,19 +35,16 @@
     "@vueuse/core": "10.6.1"
   },
   "devDependencies": {
-    "@antfu/eslint-config": "0.39.5",
+    "@antfu/eslint-config": "2.0.0",
     "@types/node": "18.16.18",
     "@vue/test-utils": "2.3.2",
     "bumpp": "9.1.1",
-    "eslint": "8.42.0",
+    "eslint": "8.54.0",
     "happy-dom": "9.20.3",
     "mobx": "^6.9.0",
     "tsup": "7.0.0",
     "typescript": "5.1.3",
     "vitest": "0.32.1",
     "vue": "^3.3.4"
-  },
-  "eslintConfig": {
-    "extends": "@antfu"
   }
 }