Add actions policies endpoints

[jndz2]

GitHub announced GA for workflow execution protections in gh actions.

Endpoints:

• GET /orgs/{org}/actions/policies
• POST /orgs/{org}/actions/policies
• GET /orgs/{org}/actions/policies/{policy_id}
• PUT /orgs/{org}/actions/policies/{policy_id}
• DELETE /orgs/{org}/actions/policies/{policy_id}
• GET /repos/{owner}/{repo}/actions/policies
• POST /repos/{owner}/{repo}/actions/policies
• GET /repos/{owner}/{repo}/actions/policies/{policy_id}
• PUT /repos/{owner}/{repo}/actions/policies/{policy_id}
• DELETE /repos/{owner}/{repo}/actions/policies/{policy_id}

Docs: https://docs.github.com/en/rest/actions/policies?apiVersion=2026-03-10

[jndz2]

I'd like to work on it, if that's okay.

[gmlewis]

I'd like to work on it, if that's okay.

Thank you, @jndz2! It's yours.