feat(sandbox): add NAS, OSS, and PolarFS configuration support

[OhYee]

Add new configuration interfaces for NAS, OSS, and PolarFS mounting capabilities across sandbox implementations. Update createFromTemplate methods and API calls to accept these new configuration options. Enhance model definitions with comprehensive type interfaces for cloud storage integrations.

New types added:

• NASConfig/NASMountConfig for Network Attached Storage
• OSSMountConfig/OSSMountPoint for Object Storage Service
• PolarFsConfig/PolarFsMountConfig for Polar File System

The changes enable advanced storage mounting scenarios for sandbox environments.

Change-Id: Ib07c8562f9056a15cbe95718a7194addc2ac002b

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