feat: get overnight-account details via cli

[AlexanderHulbe]

Problem or use case

It would be great to see the details of the overnight-account with amount, predicted annual interest and collected interest.

Proposed solution

maybe like this:

sc overnight-account --json

Alternatives considered

No response

Relevant command or workflow

sc overnight-account --json

User impact

Blocking a workflow

Checklist

• I have searched existing issues.
• This is a CLI feature request, not an account/support request.
• I understand this repository is source-available and does not accept external PRs.