fix: times should be in seconds

[simoneb]

Fixes #140

[Copilot]

Pull Request Overview

This PR fixes the issue of handling test times by converting durations from milliseconds to seconds.

• Introduces a new end-to-end test to ensure test times are reported in seconds.
• Updates XML building logic to convert durations from milliseconds to seconds.

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
test/e2e/compare-time.js	Adds e2e test verifying test durations in seconds.
lib/build-xml.js	Converts duration values to seconds for XML output.

Files not reviewed (1)

• package.json: Language not supported

[agubler]

Seems reasonable to me

[simoneb]

Thanks @agubler , I had to come up with a simple heuristic to validate that times are converted, because there isn't a way to check that they are "right", only to check that they seem sensible.