Add webhook events for pull request review requests - Fixes #26371 - Added support for the "Pull request review requested" and "Pull request review request removed" webhook events. - Updated the `getPullRequestPayloadInfo` function in `general.go` to handle these new webhook events. # Before ![image](https://github.com/go-gitea/gitea/assets/20454870/bd942971-fb1d-40f3-8961-46638e3588fa) # After ![image](https://github.com/go-gitea/gitea/assets/20454870/216e9c7d-0a4d-49f9-8492-2d14c88bbf4e) Signed-off-by: Yarden Shoham <git@yardenshoham.com> Co-authored-by: Giteabot <teabot@gitea.io>