Is GitHub Actions workflow or action definition

Checks if the file is either a GitHub Actions workflow file, or a GitHub Action definition (action.yml). Steps, and the uses: references within them, appear in both, so prefer this over IsGitHubActionsWorkflow as a precondition for any recipe that operates on steps. Recipes that read workflow-only keys such as on:, permissions:, runs-on: or needs: should keep the narrower IsGitHubActionsWorkflow.