Add Dev Container configuration

[matthewruzzi]

Would it make sense to add a Dev Container configuration to make it easier for people to get started contributing to this project in GitHub Codespaces?

[ericpp]

I think that's a great idea!

[stevencrader]

I'd say go for it. I'm not familiar with them but @Marzal had started looking at creating a Docker image (see #516).

[daveajones]

Do it!