I think it was a wrong link provided. There is no ‘appium-xcuitest-driver’ as a registered npm package.
I’ve found this one https://www.npmjs.com/package/appium-webdriveragent-driver
So maybe npm install appium-webdriveragent-driver should work.
update no the npm install appium-webdriveragent-driver is not having automationName: ‘xcuitest’ as an option. So seems like the correct npm (appium-xcuitest-driver) is just not available as package to install at the moment