Merge badpod into this. But note!

[mt-inside]

Three cmds

• cmd/server serve - exposes everything
• cmd/server oneshot - uses the render package
• cmd/render - gets the trie over tcp, draws nicely
• UI: envbin - dump the JSON for now
• UI: badpod - autogen - see twit DMs
• UI: ckad - makes something close enough to CKAD course binary to not put people off. THis needs building to docker.io/mtinside/envbin:latest. New envbin can be on other tags? Different repo name? Or actually: quay - would flush building a GH action to publish to it