MacOS on AWS debugging playbook / logs / dashboards

We need to have tooling and a playbook for debugging issues with AWS MacOS runner instances. This should cover at least the following:

• How to determine if the AWS MacOS runner instance group is healthy. Links to logs and metrics.
• How to SSH into a Mac instance. How to subsequently SSH into a nested VM.
• How to debug nesting client/server. Links to logs on host.
• How to list, delete nested VMs (tart commands).
• How to debug Taskscaler-driven health checks.
• How to replace all instances in an ASG.
• How to debug networking between Runners in GCP to instances in AWS to nested VMs inside macs.

MRs:

• AWS ASG health and SSHing into a Mac instance 👉 docs: Add MacOS runners debugging guide and SSH... (gitlab-com/runbooks!8893 - merged) • Davis Bickford
• Debugging nesting 👉 docs: Add debugging instructions for MacOS runn... (gitlab-com/runbooks!8927 - merged) • Davis Bickford • 18.1
• Runner projects and config locations 👉 docs: Add projects overview and Terraform confi... (gitlab-com/runbooks!8976 - merged) • Davis Bickford
• Add AWS account details and debugging guidance for macOS runners 👉 docs: Add AWS account details and debugging gui... (gitlab-com/runbooks!9013 - merged) • Davis Bickford
• Add notes from recent document by @joe-shaw https://docs.google.com/document/d/1zYbQD1DDvvuDxczYa4c8omQjO2RcS-6VRw5650E0Pxw/edit?tab=t.0