`trust find`, like `proof find` but for trust declarations

[Minoru]

I'm running cargo-crev 0.17, installed via cargo install, on Debian Bullseye.

A user I trust on a "medium" level disappeared from cargo crev id query trusted. (I initially attributed that to me changing that user's level from "low" to "medium", but I think it was really caused by cargo crev fetch all that I ran about the same time.) I had to play with --depth to understand that this is caused by someone's negative review, and then had to run grep -R ' id: ID' ~/.cache.crev to find out whose review it was.

The issue would've been easier to resolve if Crev had a command that listed all users' trust declarations for a particular ID. I think it should be some called cargo crev trust find, but I haven't fully groked how CLI is organized, so perhaps this functionality should be added to cargo crev proof find instead.

[dpc]

I agree a command like this would be really useful. And as usually, determining the CLI is the most difficult part. Could be also cargo crev id describe <id> or something.