Deliver improvements and CommanderGenerator refactors

* show --env option in help (#8303)
* Fix 'fastlane env' crash when Xcode Version cannot be obtained (#8301)
* Use eval_gemfile to install plugins (#8282)
* Adding GitLab CI git_branch ENV variable check (#8289)
* Refactor deliver and pilot BuildWatcher for iTunes Connect builds (#7386)
* [deliver] Add review information to preview (#8176)
* [deliver] Load `review_information` from text files (#8175)
* [deliver] more information about ipa/pkg analyzing failures (#8286)
* [frameit] Fix missing `!` when calling `user_error` (#8281)
* [frameit] fix show_complete_frame=false, improve speed (#8315)
* [sigh] fixed plutil replacement string (#8295)

* Refactor CommanderGenerator usage to avoid conflicting short options
	* snapshot (#8310)
	* screengrab (#8305)
	* scan (#8297)
	* produce (#8292)
	* supply (#8288)
	* pilot usage (#8287)
	* pem (#8276)
	* match (#8274)
	* gym (#8273)

https://github.com/fastlane/fastlane/releases/tag/2.18.0
