[CI] Enable codecov metrics for opencti-front

[aHenryJard]

Use case

Codecov is watching code coverage only for opencti-graphql package, we are starting to write frontend tests, it would be great to know the coverage and moreover the coverage addition or regression on PRs.

I think that basically we have to

• enable coverage on frontend and have an output in a file
• give this output file to codecov

Current Workaround

Proposed Solution

Additional Information

If the feature request is approved, would you be willing to submit a PR?

Yes / No (Help can be provided if you need assistance submitting a PR)