Remove AppVeyor Configuration and Integrate Windows Testing in GitHub Actions

[Phillip9587]

The repository currently includes an AppVeyor configuration file (appveyor.yml), which appears to be used for testing on Windows. However, GitHub Actions is already in use for CI/CD, and Windows-based testing can be integrated into the existing GitHub Actions workflow. Is AppVeyor providing any unique value that GitHub Actions does not?

Proposed Changes

• Integrate Windows testing into the GitHub Actions workflow.
• Remove the appveyor.yml configuration if it's no longer needed.
• Update the README to remove the AppVeyor status badge.

[bjohansebas]

Yep, we should remove AppVeyor and run the tests on Windows. That's something being done in the other repositories that still have AppVeyor

[ctcpip]

@jonchurch 👀

[jonchurch]

We can remove appveyor, I dont think our appveyor integration is functional anymore

We've removed it in express main repo, as an example. You can see there how we setup windows testing in the matrix.