Google Cloud OS Login

The `google-cloud-os-login` library is the Python client for the Google Cloud OS Login API, which enables managing SSH access to Google Compute Engine instances using IAM identities. It simplifies SSH key management, unifies Linux user accounts across multiple VMs, and integrates with Google Cloud IAM for granular authorization, two-factor authentication (2FA), and comprehensive audit logging. The library maintains a frequent release cadence, often receiving updates weekly or bi-weekly as part of the larger `google-cloud-python` client ecosystem.