Improve compatibility with other operating systems

[swissspidy]

I'm trying to improve Windows support a little bit so that tests could run on CI. Doing things in PHP vs. CLI commands is one step.

Lots of AI code changes in here, might need some cleanup

~Main change is blocked by https://github.com/wp-cli/wp-cli/pull/6124~

To-do:

• [ ] Add Behat tags to skip tests for certain OS?

See #155

[codecov[bot]]

Codecov Report

:x: Patch coverage is 0% with 108 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/Context/FeatureContext.php	0.00%	105 Missing :warning:
src/Context/GivenStepDefinitions.php	0.00%	3 Missing :warning:

:loudspeaker: Thoughts on this report? Let us know!