Build and publish pydevd binaries

[AdamYoblick]

• Build pydevd binaries and publish them as pipeline artifacts
• Download published artifacts in test jobs and copy them to the appropriate location, before tests run
• Move lint and pydevd to their own stages for a cleaner build
• Yaml cleanup

I ran the test pipeline manually pointing at this pr branch, the run is at https://dev.azure.com/debugpy/debugpy/_build/results?buildId=4332&view=results

[bschnurr]

we dont need to import the new pipeline template?

[AdamYoblick]

That's only required for production pipelines afaik. This is just a PR pipeline.

Debugpy has different pipelines for CI and PR. It's not how I would have set it up but that's how it was when I joined :)