* 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
We used to send the ANSI sequence for "bright black" when we wanted gray, but this color turns out to not be visible in some popular color schemes.
Instead, when we detect a 256-color terminal, switch to displaying a color sequence for gray that is consistent and does not depend on terminal color scheme.
