nargo fmt --check

[benesjan]

Problem

We would like to integrate nargo fmt in CI in aztec-packages but to do that we would need to run nargo fmt in "check-only mode" (not modifying the files and just throwing instead).**

Happy Case

nargo fmt --check exits with exit code 1 when formatting issues are spotted.

Alternatives Considered

No response

Additional Context

No response

Would you like to submit a PR for this Issue?

No

Support Needs

No response

[Savio-Sou]

Converted into #3520.