As a user, I should be able to iterate over steps of test run iterations

As a user, I should be able to iterate over steps of test run iterations.

Those steps should have all the info that test run steps already have (defects, evidences, action, data, status, etc), more info here: https://docs.getxray.app/display/XRAYCLOUD/Iterations#Iterations-ExportingTestRunsfromaTest