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/createSuper.js

@@ -0,0 +1,16 @@
+import getPrototypeOf from "./getPrototypeOf.js";
+import isNativeReflectConstruct from "./isNativeReflectConstruct.js";
+import possibleConstructorReturn from "./possibleConstructorReturn.js";
+function _createSuper(t) {
+  var r = isNativeReflectConstruct();
+  return function () {
+    var e,
+      o = getPrototypeOf(t);
+    if (r) {
+      var s = getPrototypeOf(this).constructor;
+      e = Reflect.construct(o, arguments, s);
+    } else e = o.apply(this, arguments);
+    return possibleConstructorReturn(this, e);
+  };
+}
+export { _createSuper as default };