Need Human-readable output for get-nodes

[dopheide-esnet]

I've been playing around with a human-readable table for get-nodes. I've got working code as an example, but I feel like we can wait a bit to see what other output commands we may want to support.

dopheide-esnet@858e06c

[ckreibich]

Yeah this is great, thank you for exploring — I fully agree we don't want the JSON output as the default thing to consume by humans. The only question is how to structure/standardize its processing.