[Feature Request] Ignore and custom error message flags.

[JoshLind]

Hi! Thanks for building this awesome tool! 😄 We're currently working on integrating it into our project at Aptos Labs.

A couple feature requests that might be useful:

1. --ignore flag to explicitly exclude certain directories or files from verification. We currently use the --workspace flag, but some of our cargo files are automatically generated (without ordering). It would be great to tell the tool to ignore these.
2. --custom-error-message flag to display a custom error message when the --check command fails. Instead of just displaying error: Dependencies for <crate> are not sorted. It would be nice to display a custom message, e.g., Dependencies for <crate> are not sorted. To sort them, run <command>. For more information, visit: <cargo-sort url>.

[DevinR528]

Thanks! Sorry for the slow response. Both of these are great ideas! I have had feedback that the error message isn't very good (which I agree with) what do you think of just changing the error message to that, I know all the info is there (the crate)? The ignore flag is a great idea! Are you interested in making a PR I'm happy to help/review, if not I have a few things backed up at the moment but since this is a smaller more doable issue I can probably get to it in the next few days.

[JoshLind]

Thanks @DevinR528! Apologies for the delay in responding:

1. I'd prefer the ability for a custom error message, but a more descriptive default also makes sense 😄
2. No rush on the improvements (I won't be able to get to it soon, either!). Just wanted to make you aware of these asks.

Thanks again!

[DevinR528]

No worries, and yeah, they would both be awesome additions!!