[JENKINS-69482] Support for ready_for_review and converted_to_draft events

[Dohbedoh]

Description

Support for ready_for_review and converted_to_draft event action. See JENKINS-69482

Submitter checklist

• Link to JIRA ticket in description, if appropriate.
• Change is code complete and matches issue description
• Automated tests have been added to exercise the changes
• Reviewer's manual test instructions provided in PR description. See Reviewer's first task below.

Reviewer checklist

• Run the changes and verify that the change matches the issue description
• Reviewed the code
• Verified that the appropriate tests have been written or valid explanation given

Documentation changes

• Link to jenkins.io PR, or an explanation for why no doc changes are needed

Users/aliases to notify

[Dohbedoh]

cc @jenkinsci/github-branch-source-plugin-developers

[iamtodor]

@olamy @Dohbedoh thank you for the solution, folks!

Could you please point me to its usage? I walked thru the page https://docs.cloudbees.com/docs/cloudbees-ci/latest/cloud-admin-guide/github-branch-source-plugin and I didn't find anything. Also, I asked a question in gitter chat, but got no answers.

If this is the wrong place to ask a question please let me know.

[iamtodor]

to whom it may concern, in another PR there is usage #416 (comment)