feat: core update

[NisuSan]

0. Update deps to nuxt 4!
1. Hide the composables under .nuxt folder with autoimport preserving;
2. Fix varning on 'tsconfig.json' not found while startup;
3. Fix error while endpoint removng;
4. Add fallback when input type is undefined;
5. Allow composable function to take no params instead of empty object.