Clarify error message when group doesn't exist while adding scope map

[joostrijneveld]

Is your feature request related to a problem? Please describe.

When following the instructions about creating an OAuth integration, I was directed to issue the follow command:

kanidm system oauth2 update-scope-map <name> <kanidm_group_name> [scopes]...
kanidm system oauth2 update-scope-map nextcloud nextcloud_admins admin

However, the group nextcloud_admins did not exist yet. I was presented with the following somewhat cryptic error message:

2024-04-18T12:33:30.065096Z ERROR kanidm_cli: Item not found:" NoMatchingEntries" "8267f859-f59e-4947-8cb7-372f382802c4"

Describe the solution you'd like

I'd much appreciate a descriptive error message that tells me the group nextcloud_admins did not exist.

Describe alternatives you've considered

None; I have no idea what the returned UID represents.

Additional context

None

[Firstyear]

Hmmmm i'm not 100% sure how'd we handle this one. NoMatchingEntries is telling you here "nothing meets the criteria you requested" in this case, the absence of a group.

The UUID it gives you is a key that looks up the operation in the logs so you can find things.

maybe we need a specific error translation in the oauth2 path given our ongoing work to make errors more specific? But that has it's own challenges ...

[yaleman]

Another problem is that it doesn't tell you if it's the group or the OAuth2 client it can't find, either.

It does need a more human error either way.