Sops support

[tvangundy]

Add sops command support

[rmvangun]

I don't think there will be a windsor sops command.

All that the sops helper should do is decrypt an encrypted SOPS file in the context config, and inject those as environment variables. It should specifically implement the GetEnvVars function.

If you have something like contexts/local/secrets.enc.yaml (or some other pattern), it should decrypt the contents, so that if you had something like:

LOCALSTACK_API_KEY: abcd1234

it would inject that in to your environment when you're on that context.

Have a look at how this is implemented in the original Python.