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/objectWithoutPropertiesLoose.js

@@ -0,0 +1,10 @@
+function _objectWithoutPropertiesLoose(r, e) {
+  if (null == r) return {};
+  var t = {};
+  for (var n in r) if ({}.hasOwnProperty.call(r, n)) {
+    if (-1 !== e.indexOf(n)) continue;
+    t[n] = r[n];
+  }
+  return t;
+}
+module.exports = _objectWithoutPropertiesLoose, module.exports.__esModule = true, module.exports["default"] = module.exports;