Wire network to the OpenShell create workspace

[jeffmaury]

Is your feature request related to a problem? Please describe

When creating an OpenShell workspace, handle the network configuration and create an OpenShell policy file

Describe the solution you'd like

See https://docs.nvidia.com/openshell/get-started/tutorials/first-network-policy

Describe alternatives you've considered

No response

Additional context

No response

[coderabbitai]

🔗 Related PRs

#1722 - fix(agent-workspace): disable unrestricted network option for openshell runtime [merged]

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