Add GCP rule: Privileged Role Granted - Owner or Editor

[developutm]

• A detailed explanation of the changes: Adds detection for when a highly privileged GCP IAM role (Owner, Editor, or IAM Admin) is granted to a user or service account via SetIamPolicy.
• The reasoning behind these changes: These roles provide broad access to all resources and are prime targets for privilege escalation. An attacker gaining Owner or Editor access can effectively control the entire project (Privilege Escalation - T1078).
• Reference: N/A