feat: add Spanish and Italian to language switcher

Added Spanish (es) and Italian (it) languages to the navigation language switcher:
- Added Español 🇪🇸 to language dropdown
- Added Italiano 🇮🇹 to language dropdown
- Reordered languages alphabetically (EN, RO, ES, IT)

Users can now switch to Spanish and Italian from the header navigation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

components/layout/language-switcher.tsx

@@ -14,8 +14,10 @@ import {
 import { Language, Check } from '@mui/icons-material'
 
 const languages = [
-  { code: 'ro', name: 'Română', flag: '🇷🇴' },
   { code: 'en', name: 'English', flag: '🇺🇸' },
+  { code: 'ro', name: 'Română', flag: '🇷🇴' },
+  { code: 'es', name: 'Español', flag: '🇪🇸' },
+  { code: 'it', name: 'Italiano', flag: '🇮🇹' },
 ]
 
 export function LanguageSwitcher() {