* Implement first round of support for GitHub Actions
This commit adds:
gh actions
gh run list
gh run view
gh job view
as part of our first round of actions support. These commands are
unlisted and considered in beta.
* review feedback
* tests for exit status on job view
* spinner tracks io itself
* review feedback
* fix PR matching
* enable pager for job log viewing
* add more colorf functions
* add AnnotationSymbol
* hide job, run
* do not add method to api.Client
* remove useless cargo coded copypasta
