Add test abort in created state and cloud output mode

[yorugac]

Consider how to add monitoring of aborts from k6 Cloud in these cases:

• before test run started.
• in cloud output mode (check the logic with a single k6 first)

[yorugac]

"Global" aborts were implemented as part of PR #283: each k6 Cloud test run checks the abort status at the beginning of reconcile loop. If there's an abort status, the stop Job is created and test run is stopped. This logic works for both PLZ test run and cloud output test run.

Necessary caveat: if the test run hasn't been identified as k6 Cloud test run yet, it cannot be aborted at all. This scenario can happen with cloud output test run with an error from an initializer (e.g. badly formed script or arguments). It might make sense to look into this case more during #260.