Switch from go lint to staticcheck.io

[carleeto]

Since go lint has been deprecated (golang/go#38968), it would be good to move to an actively maintained static checker for Go. staticcheck.io comes highly recommended and is sponsored by Google.

I would like to submit a PR in the future to implement this, but would like some feedback on whether this would be appreciated before I start.

[mxygem]

I'm not familiar with staticcheck but I do know of a few teams that utilize golangci-lint as their choice. There's an option within VSCode's Go extension to select which linter to use and in checking the options just now, it looks like the newest VSC may have changed to defaulting to staticcheck.

Since not everyone uses VSCode, I'd absolutely appreciate bringing the project to a point where it is up to date and standardized for everyone. Thank you for reaching out about it!