Add code coverage support to pipeline - FIxes #66

[PlagueHO]

Pull Request (PR) description

This PR adds code coverage to the build pipeline and updates the Sampler GitHub tasks.

This Pull Request (PR) fixes the following issues

• Fixes #66
• Fixes #65

Task list

• [x] Added an entry under the Unreleased section of the change log in the CHANGELOG.md. Entry should say what was changed, and how that affects users (if applicable).
• [ ] Resource documentation added/updated in README.md in resource folder.
• [ ] Resource parameter descriptions added/updated in schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [ ] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [ ] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

@johlju - would you mind reviewing when you get time?

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This change is 

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (main@f0d2cdb). Click here to learn what that means. The diff coverage is n/a.

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