feat: Migrate to Nuxt 3 framework

[mrth2]

feat: Migrate to Nuxt 3 framework

What this PR does / why we need it:

This PR migrates the frontend application from Nuxt 2 to Nuxt 3, bringing significant performance improvements and updated dependency support.

Key changes include:

• Upgraded from Vue 2 to Vue 3 with Composition API
• Migrated from Vuetify 2 to Vuetify 3
• Replaced @nuxtjs/auth-next with @sidebase/nuxt-auth
• Updated component syntax to match Vue 3 standards
• Refactored composables to work with Nuxt 3’s module system
• Modified reactive state management to use Vue 3’s Composition API
• Replaced @nuxtjs/axios ( deprecated ) with axios & the custom nuxt plugin
• Replaced @nuxtjs/proxy with nitro built-in proxy

The migration improves developer experience with better TypeScript support, faster HMR (Hot Module Replacement), and access to modern Vue ecosystem features.

Which issue(s) this PR fixes:

Fixes #XXX (Migration to Nuxt 3)

Special notes for your reviewer:

Please pay special attention to:

• Authentication flow changes with the new auth provider
• Vuetify 3 UI changes
• Component lifecycle handling in the Composition API
• TypeScript type definitions across the application

Testing

Testing was conducted across all major components and pages, ensuring:

• Recipe browsing functionality works correctly
• Authentication and authorization flows are maintained
• Responsive design works across different viewports
• User preferences are correctly stored and retrieved