ci: Splits test execution and coverage reporting

[davelosert]

This pull request primarily focuses on the reconfiguration of the GitHub Actions workflows to improve the coverage reporting process. The most significant changes involve the creation of a new workflow, Report Coverage, and the modification of the test.yml workflow to upload coverage reports as artifacts.

Here are the key changes:

New Workflow Creation:

• .github/workflows/report-coverage.yml: A new workflow named Report Coverage has been introduced. This workflow triggers upon the completion of the Build and Test workflow and is responsible for downloading the coverage reports generated during testing.

Workflow Modification:

• .github/workflows/test.yml: The Test Working Directory Option and Test Default Action steps have been commented out. Instead, a new step named Upload Coverage has been added. This step uses the upload-artifact action to upload the coverage reports generated during testing, which can then be downloaded by the Report Coverage workflow.

[davelosert]

This was actually just a test for #316. As I don't receive pull requests in for this repository often enough, I don't think it's justified to actually reconfigure the test-workflow to allow comments from forks.