Add a macOS Disk management declaration profile that sets
ExternalStorage to ReadOnly, and create a manual label "Macs excluded
from external storage restrictions" for opt-outs. Register the new label
in default.yml and reference the new Disk management settings.json in
the workstations fleet controls, excluding hosts in the manual label so
they retain read-write external storage.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
## Release Notes
**New Features**
- Enforces external storage devices as read-only on macOS, Windows, and
Linux systems
- Introduces new host labels allowing administrators to selectively
exempt specific devices from external storage restrictions
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Allen Houchins
87bc1ce78a