Add support for Visual Studio Codespaces

[markusweimer]

One way to resolve #60 is to add explicit support for dev containers to the Hummingbird repo. The documentation for that is here. Specifically, we could add a Dockerfile and settings for VS Code to use it. I am happy to give that a try if someone has a Dockerfile I can base that on.

[ksaur]

I cannot access Visual Studio Codespaces. But here is https://github.com/microsoft/hummingbird/blob/kasaur/docker/Dockerfile

[markusweimer]

Thanks! I have fiddled around a bit and made this:

https://github.com/markusweimer/hummingbird/tree/devcontainer/.devcontainer

Is there interest to have this as a PR?

[ksaur]

Yes, that would be great, thank you!

[ksaur]

Closing via PR #71

[interesaaat]

Can we have a documentation on how to use this thing in CONTRIBUTING.md?

[ksaur]

writing now.