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.

node_modules/pathe/dist/index.mjs

@@ -0,0 +1 @@
+export { h as basename, p as default, d as delimiter, f as dirname, e as extname, g as format, i as isAbsolute, j as join, a as normalize, b as normalizeString, k as parse, c as relative, r as resolve, s as sep, t as toNamespacedPath } from './shared/pathe.ff20891b.mjs';