[💡 Feature]: provide a richer return interface for the launcher

[christian-bromann]

Is your feature request related to a problem?

Currently we only return the exitCode when starting the WDIO CLI Launcher programmatically.

Describe the solution you'd like.

A user might have iterest in more information, e.g.

• number of passing, failing, retried tests
• duration of test run
• what else?

Let's also update the smoke tests were we had to scan some log files to get these information.

Describe alternatives you've considered.

n/a

Additional context

This is a breaking change, so scheduling it for v9 release.

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[wdio-bot]

Thanks for reporting!

We greatly appreciate any contributions that help resolve the bug. While we understand that active contributors have their own priorities, we kindly request your assistance if you rely on this bug being fixed. We encourage you to take a look at our contribution guidelines or join our friendly Discord development server, where you can ask any questions you may have. Thank you for your support, and cheers!

[nextlevelbeard]

Hopefully will tackle or help tackle some issues raised in #10720

[christian-bromann]

Removing this from the v9 release, I think it would be still great to get this landed some day!