Add Code Coverage Reporting to Build Pipeline - Fixes #255

[PlagueHO]

Pull Request (PR) description

This PR adds build coverage reporting to build pipeline. It also updates the build to use Sampler.GitHubTasks.

This Pull Request (PR) fixes the following issues

• Fixes #255
• Fixes #254

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 the 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 have time?

---

This change is 

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (main@f884481). Click here to learn what that means. The diff coverage is n/a.

@@          Coverage Diff          @@
##             main   #256   +/-   ##
=====================================
  Coverage        ?    95%           
=====================================
  Files           ?      7           
  Lines           ?    882           
  Branches        ?      0           
=====================================
  Hits            ?    842           
  Misses          ?     40           
  Partials        ?      0