feat: allow the configuration of the deletion propagation policy

[MariamFahmy98]

Explanation

This PR allows the configuration of the deletion propagation policy globally, across the Test, TestStep, and the Delete. By default, this value is set to the Foreground. In case of cleaning up the resources after test execution, the propagation policy is set to Background.

Related issue

Closes #1306

Proposed Changes

Checklist

• [ ] I have read the contributing guidelines.
• [ ] I have read the PR documentation guide and followed the process including adding proof manifests to this PR.
• [ ] This is a bug fix and I have added unit tests that prove my fix is effective.

Further Comments