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/@babel/runtime/helpers/isNativeReflectConstruct.js

@@ -0,0 +1,9 @@
+function _isNativeReflectConstruct() {
+  try {
+    var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
+  } catch (t) {}
+  return (module.exports = _isNativeReflectConstruct = function _isNativeReflectConstruct() {
+    return !!t;
+  }, module.exports.__esModule = true, module.exports["default"] = module.exports)();
+}
+module.exports = _isNativeReflectConstruct, module.exports.__esModule = true, module.exports["default"] = module.exports;