Add Actors To Project Role

Adds actors to a project role for the project.To replace all actors for the project, use [Set actors for project role](#api-rest-api-3-project-projectIdOrKey-role-id-put).This operation can be accessed anonymously.**[Permissions](#permissions) required:** *Administer Projects* [project permission](https://confluence.atlassian.com/x/yodKLg) for the project or *Administer Jira* [global permission](https://confluence.atlassian.com/x/x4dKLg).