CPU Pinning support for Firecracker microVMs

[christian7007]

Description Implement support for CPU Pinning feature for Firecracker microVMs.

Interface Changes The existing interfaces for other hypervisors should be used.

Progress Status

• [ ] Branch created
• [ ] Code committed to development branch
• [ ] Testing - QA
• [ ] Documentation
• [ ] Release notes - resolved issues, compatibility, known issues
• [ ] Code committed to upstream release/hotfix branches
• [ ] Documentation committed to upstream release/hotfix branches