cycle/2 with an id

[zimt28]

faker already has a cycle function, but it would be great if it could be used with an id instead of a pid. This would make tests much easier, as there's no need to keep track of the cycle process manually:

assert Helper.cycle(:fake, ["peter", "paris", "london"]) == "peter"
assert Helper.cycle(:fake, ["peter", "paris", "london"]) == "paris"
assert Helper.cycle(:fake, ["peter", "paris", "london"]) == "london"
assert Helper.cycle(:fake, ["peter", "paris", "london"]) == "peter"
assert Helper.cycle(:fake, ["peter", "paris", "london"]) == "paris"
assert Helper.cycle(:fake, ["peter", "paris", "london"]) == "london"

(Copied from faker-elixir)