Generic entity formatting

[nblumhardt]

Had a shot at generic output formatting for entities, i.e. what we'll get from apikey list type commands:

The results are okay - there are three modes, text (Id/Title pair), JSON (colorized via Serilog...) and plain JSON. It's a hideously inefficient way to output JSON, but not too bad to read. An --indented option might be desirable someday.

Hacked inSorted out the seqcli help <command> <subcommand> functionality en route.

[nblumhardt]

I dropped two test cases for the:

cmd
cmd subcommand

situation where both the top-level command and subcommand are valid; I don't think, with the current CLI, it's likely we'll use the top-level commands for things like apikey, signal, etc. - though it shouldn't be too hard to bring that possibility back if we decide we need it.

[nblumhardt]

r? @KodrAus @andymac4182

[KodrAus]

This looks good to me!

[nblumhardt]

Thanks @KodrAus 👍