[✨ Feature]: Support logging when using CrabNebula on MacOS

[goosewobbler]

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Which area does this feature affect?

Tauri Service (@wdio/tauri-service)

What problem does this solve?

Logging doesn't work on MacOS when using CrabNebula

Proposed Solution

CrabNebula's test-runner-backend needs to forward stderr and stdout from the app.

Alternatives Considered

No response

Additional Context

No response

Code of Conduct

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

Is there an existing feature request for this?

• I have searched the existing issues

[goosewobbler]

This issue is just for tracking - once CrabNebula forwards stdout / stderr it can be closed.