Add basic codespaces api

[asklar]

Resolves #2721

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Behavior

Before the change?

• no codespaces api :)

After the change?

• adds basic Codespaces API:
  • GetAll()
  • Get(name)
  • GetForRepository(owner, repo)
  • Start(name)
  • Stop(name)

Other information

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Additional info

Pull request checklist

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Added the appropriate label for the given change

Does this introduce a breaking change?

Please see our docs on breaking changes to help!

• Yes (Please add the Type: Breaking change label)
• No

If Yes, what's the impact:

• N/A

Pull request type

Please add the corresponding label for change this PR introduces:

• Bugfix: Type: Bug
• Feature/model/API additions: Type: Feature
• Updates to docs or samples: Type: Documentation
• Dependencies/code cleanup: Type: Maintenance

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[asklar]

@kfcampbell @nickfloyd could you folks take a look? Thanks!

[kfcampbell]

@asklar I've approved the Actions workflow, which should get you some information about the test error.

[asklar]

thanks @kfcampbell ! I had forgotten to make the client type public :) (it was marked internal)
Could you kick the pipeline again?

[asklar]

it's failing because the Observable client doesn't expose these. @kfcampbell Is there a way to say "sorry, not supported at the moment through the reactive wrapper, use the other one"?

[asklar]

@kfcampbell I've pushed an empty IObservableCodespacesClient, hopefully this works now : )

[asklar]

conventions tests was failing, I've fixed it now. Sorry for the back and forth :) @kfcampbell

[asklar]

another one

[asklar]

@kfcampbell @nickfloyd sorry to bug you, could you kick the ci?

[nickfloyd]

Thanks for doing this @asklar! ❤️ LGTM!