feat: add virtualization interface

[locnnil]

Description

Make Sdkcraft aware of the virtualization interface for having /dev/kvm, /dev/vhost-vsock, /dev/vhost-net and /dev/vsock available on the LXD container. Depends on:

• Add Virtualization/KVM interface workshop#934

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Docs

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• I have checked and added or updated relevant release notes.
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Or:

• I confirm the PR has no implications for documentation.