Add prebuilt binaries

[Devraj Mehta (devm33)]

Adds prebuilt binaries to the published npm package.

After looking into using prebuild-install and prebuildify, went with a hand-rolled approach since the gyp build for node-pty was sufficiently unique with all of the different targets and assets.

The last commit is purely for testing via fork and should be dropped before merging.

See example build on forked package: https://www.npmjs.com/package/@devm33/node-pty?activeTab=code

The second to last commit is using GitHub Actions to publish instead of Azure Pipelines since I didn't have access to test there. If Actions is acceptable to use that'd be great! Otherwise will need to port to Pipelines.

cc #46

[Daniel Imms (Tyriar)]

Raymond Zhao (@rzhao271) when you're back can you help Devraj Mehta (@devm33) get this through? Just devops integration/publish verification to do

[Devraj Mehta (devm33)]

Thanks Daniel Imms (@Tyriar)! I did at least manage to get the tests green on CI with b7e506d
Hopefully, the workflow changes aren't too bad adapting 3af980b into azure-pipelines.yml and publish.yml. But without access I'd be flying blind. Appreciate your help when you're back Raymond Zhao (@rzhao271) 🙇 Please feel free to ping me on slack/teams to discuss

[Raymond Zhao (rzhao271)]

Could you add node scripts/prebuild.js --populate to azure-pipelines.yml and publish.yml after all npm ci tasks? This file is good for testing but I don't think we want it in the final PR.

[Devraj Mehta (devm33)]

Yeah I can start with that. I think we'll need a way to run the publish.yml on multiple platforms, and then merge the prebuild/ directories to publish together

[Raymond Zhao (rzhao271)]

Looks like it.
The extension template has support for multiple platforms, but the npm package template doesn't. Your ask is also not the same as what the extension template does. Ref https://github.com/microsoft/vscode-jupyter/blob/main/build/azure-pipeline.stable.yml#L26 and CC Ladislau Szomoru (@lszomoru)

Edit: It might be easier for me to create a new pipeline that runs before the publishing pipeline that prepares the binaries.

[Devraj Mehta (devm33)]

Closing in favor of #804!