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/callSuper.js

@@ -0,0 +1,7 @@
+var getPrototypeOf = require("./getPrototypeOf.js");
+var isNativeReflectConstruct = require("./isNativeReflectConstruct.js");
+var possibleConstructorReturn = require("./possibleConstructorReturn.js");
+function _callSuper(t, o, e) {
+  return o = getPrototypeOf(o), possibleConstructorReturn(t, isNativeReflectConstruct() ? Reflect.construct(o, e || [], getPrototypeOf(t).constructor) : o.apply(t, e));
+}
+module.exports = _callSuper, module.exports.__esModule = true, module.exports["default"] = module.exports;