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/esm/classStaticPrivateFieldDestructureSet.js

@@ -0,0 +1,7 @@
+import classApplyDescriptorDestructureSet from "./classApplyDescriptorDestructureSet.js";
+import assertClassBrand from "./assertClassBrand.js";
+import classCheckPrivateStaticFieldDescriptor from "./classCheckPrivateStaticFieldDescriptor.js";
+function _classStaticPrivateFieldDestructureSet(t, r, s) {
+  return assertClassBrand(r, t), classCheckPrivateStaticFieldDescriptor(s, "set"), classApplyDescriptorDestructureSet(t, s);
+}
+export { _classStaticPrivateFieldDestructureSet as default };