CodeCoverage pipeline for submission to onefuzz.

[ryfu-msft]

This pipeline will be triggered after a onefuzz job is completed. That way the code coverage results can be reported back to the one fuzz team for analysis.

I will need to check this in first before I can create the corresponding ADO pipeline. Then update the onfuzzconfig to point to the correct pipeline id. Once that is completed, this pipeline should work and submit our code coverage results.

Microsoft Reviewers: Open in CodeFlow