Prepare for fastlane plugins

* Preparing for fastlane plugins 🚀
* Added new option to hide timestamps in fastlane outputs using `FASTLANE_HIDE_TIMESTAMP` (#4838)
* Fix `PkgFileAnalyser` to shell escape `xar` arguments
* `Helper.fastlane_enabled?` improvements (#4889)
* Continuing work on #3843
* Ads Apple Developer Id to `itunes_transporter.rb` - allows `deliver` to work with multiple iTunes Providers

https://github.com/fastlane-old/fastlane_core/releases/tag/0.46.0
