Show estimated cost of k6 cloud run before starting and wait for prompt confirmation

[StianOvrevage]

Feature Description

We want to use k6 for running some distributed load tests.
However it's not immediately intuitive how much a test is going to cost.

Without this it feels very risky for me as a developer to run tests not knowing if I step on a land-mine that will trigger a $10000 bill and get me in trouble. I will probably end up spending a day or two replicating Grafana Cloud (the parts I need) and distributing some load tests my self with 100% confidence and control of costs. But I would rather spend that time on other stuff.

Suggested Solution (optional)

I propose a new flag to k6 cloud (--prompt / --confirm?) that before starting a test will display the estimated cost in VUhs AND dollars and a Y/n to continue.

You do have the logic to calculate VUh for a test with stages since that is visible in Grafana Cloud WebUI. So it should not be that much work making that available on the command line, and await a confirmation before starting the test. (I did append -p to k6 cloud for starting test in paused mode. But that did not appear to have any effect).

Already existing or connected issues / PRs (optional)

No response

[joanlopez]

Closing as it clearly looks as a duplicate of #3733