Noteis:
1. This moves golangci scanning to a GitHub action. This will
enable inline pointers to issues in the PR where linting fails.
2. Go 1.21 is specified in the go.mod because Kubernetes libs
require it.
3. The lint issues were removed. Some were fixed while others
were handled by skipping linting or using _ as an argument.
Many of these can be refactored later for better cleanup.
Signed-off-by: Matt Farina <matt.farina@suse.com>