Use KVM for STEM virtual machines

[balqaasem]

KVM

Kernel-based Virtual Machine (KVM) can turn any Linux machine into a bare-metal hypervisor. This allows developers to scale computing infrastructure for different operating systems without investing in new hardware. KVM frees server administrators from manually provisioning virtualization infrastructure and allows large numbers of virtual machines to be deployed easily in cloud environments.

Reference

ref: https://github.com/rust-vmm/kvm
ref: https://github.com/confidential-containers
ref: https://aws.amazon.com/what-is/kvm/

Dependencies:

Use cloud hypervisor for the VM runtime.
Use rust-nvtrust for Nvidia GPU compute support in the TEE.