Switch to GH Workflows for CI

[ramereth]

This switches this cookbook to use GH Workflows instead of TravisCI to match what Sous Chef uses. This is also intended to provide a few other minor cleanups.

Description

Issues Resolved

Check List

• [ ] All tests pass. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/TESTING.MD
• [ ] New functionality includes testing.
• [ ] New functionality has been documented in the README if applicable
• [ ] All commits have been signed for the Developer Certificate of Origin. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/CONTRIBUTING.MD

[ramereth]

@tas50 this should be ready for you to review!