WIP: MacOS test fixups and CI pipelines

[bpkroth]

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Pull Request

Title

Fixes some test issues for Mac OS environments and enables CI pipelines.

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Description

• [x] mypy fixups
• [ ] Enable MacOS build pipeline
• [ ] Enable MacOS devcontainer tests
• [ ] Fixes MacOS tests
  • [x] Address parallel runner issues with output dir cleanup
  • [ ] Fix ssh tests
• [ ] Publish multi arch docker images (amd64 and arm64)

Closes #875

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Type of Change

• 🛠️ Bug fix
• ✨ New feature
• 🧪 Tests

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Testing

Describe briefly how you tested your changes.

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Additional Notes (optional)

Add any additional context or information for reviewers.

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