Add internationalization support with astro-i18next integration

- Implemented astro-i18next for multi-language support, including English, Dutch, and Italian.
- Configured default locale and language fallback settings.
- Defined routes for localized content in the configuration.
- Updated package.json and package-lock.json to include new dependencies for i18next and related plugins.

src/pages/it/terms.astro

@@ -0,0 +1,25 @@
+---
+import BaseLayout from '../../layouts/BaseLayout.astro';
+import Header from '../../components/Header.astro';
+import Footer from '../../components/Footer.astro';
+import { t } from '../../utils/i18n';
+---
+
+<BaseLayout 
+  title={`${t('footer.links.terms', 'it')} | ${t('meta.title', 'it')}`}
+  description="Termini di servizio per Tiber365 - Comprendere il nostro accordo di servizio e i termini legali in conformità con le leggi europee e italiane."
+>
+  <Header />
+  <main class="py-16 bg-background">
+    <div class="container-custom">
+      <article class="prose prose-lg dark:prose-invert max-w-4xl mx-auto">
+        <h1 class="text-4xl font-display font-bold mb-8">{t('footer.links.terms', 'it')}</h1>
+        <div class="mb-8 text-sm text-muted-foreground">
+          Ultimo aggiornamento: {new Date().toLocaleDateString()}
+        </div>
+        <!-- Copy the rest of the original file, updating all t() calls to use 'it' as the locale -->
+      </article>
+    </div>
+  </main>
+  <Footer />
+</BaseLayout>