Integrate with hyperlight-dev/hyperlight-sandbox

[danbugs]

Summary

Integrate hyperlight-unikraft with hyperlight-dev/hyperlight-sandbox to provide a higher-level sandboxing API on top of the micro-VM runtime.

TODO

• Understand the hyperlight-sandbox API surface and how it expects guests to be packaged
• Determine what adapter layer is needed between unikraft's ELF-loader model and sandbox's expectations
• Identify any missing host function support or configuration that sandbox requires