Add support for GitHub Draft PRs
GitHub released Draft PRs https://twitter.com/github/status/1096093162345508864 We have users requesting we add support to not run against branches without a Draft PR, creating this feature request to gauge interest and inform prioritization. It would be nice to have the option to run CI only on PRs which are not draft PRs, as they are intended as work in progress and are likely to be in a broken state which is expected. The option to force trigger a build on such requests with an API call will be nice to so that developers can develop their own integrations like running CI on a comment in such a PR. And CI should be triggered as soon as the PR is marked as ready for review (not a draft anymore).