golangci-lint can run all the currently enabled linters, and as far as I
can tell, does it in under 5 seconds as opposed to over 180 seconds
(compare `time make cilint` and `time make lint`).
Some of the linters that are listed in the "enabled" section but
commented out looked like a good idea to me, and fairly low hanging
fruit to fix, but they are not passing at the moment.
All the linters covered in the current Makefile are run.
TODO:
- replace lint target in Makefile with golangci-lint
- remove .github/workflow/errcheck.yml
