DEV REQUEST: Can we integrate a golang Linter for PRs?

[thebeline]

This would help a little with 3rd party developers adhering to certain standards, help keep the code to a specific kind of clean, and also potentially catch various errors and such.

Suggested: https://github.com/golangci/golangci-lint

At first we wouldn't have to have it configured to block PRs, we could start out with it just triggering annotations to help the review process, and as we get comfortable with the way that it behaves, we could configure it to block, so that we don't let the issues through and into the code at all.