Run clippy in ci

[cospectrum]

The contribution guide suggests running clippy. There are several pull requests that use the cargo clippy fix. But at the same time, I did not find a ci job that would check clippy, which looks strange.

[travenin]

Running clippy in CI for every PR would be very good idea to keep codebase in better shape. However, there are quite a lot of issues in the main branch currently. Majority of them should be fixed first.

However, I am interested in working on this issue.

[pereman2]

I've been avoiding this as much as possible because I hate some things from clippy, but overall it is a good direction. I would suggest using this command as the entrypoint cargo clippy -- -A clippy::all -W clippy::correctness -W clippy::perf -W clippy::suspicious --deny=warnings

[travenin]

Good point. It's not necessary to keep clippy perfectly happy. Your suggested command looks good place to start. 👍