GitHub Issues Workflow for Chef

This RFC codifies the workflow of Chef maintainers while maintaining issues and contributions for Chef.

Special thanks to @btm / @lamont-granquist / @danielsdeleo / @mcquin / @adamedx / @jdmundrawala  who has helped put the first version come together.
```diff
- After this point any fix for an issue should follow the contribution workflow.
+ Any code or contributions associated with the issue will follow the contribution workflow documented below.
```