[Docs] Explain how to enable plugins in Xcode and Xcode Cloud#653

czechboy0 merged 3 commits intoapple:mainapple/swift-openapi-generator:mainfrom

czechboy0:hd-faq-xcode-cloud-pluginsczechboy0/swift-openapi-generator:hd-faq-xcode-cloud-pluginsCopy head branch name to clipboard