[REFactor] - Migrate to Nuxt 4, update dependencies, and restructure app configuration; remove unused files and optimize components.

[FIX] - Typo in footer

Update README.md

[ADD] - Updates screenshots

[ADD] - New config from useAppConfig() instead data.json,

[FIX] - Better examples in data.json

[ADD] - Details in README.md

[ADD] - Details

[ADD] NuxtImg in app.vue

[ADD] - Details for performance

[ADD] - Nuxt Image Optimization

[Less data]

Mininaml changes

Fisrt commit