Add Protractor Cucumber guide for javascript

[cnishina]

Also, have a configuration that extends lib/config typings to include w/ cucumber types angular/protractor#3919

[igniteram]

ahh I see, cucumber is completely removed from protractor i.e. no native support ⚠️

[cnishina]

Well, cucumber is a custom framework so it never had native support. We plan to leave the documentation in Protractor repo and provide good examples here.