Add support for Cumulus NVUE switches

ansible/physical-network.yml

ansible/roles/nvue-switch/README.md

ansible/roles/nvue-switch/defaults/main.yml

ansible/roles/nvue-switch/tasks/main.yml

ansible/roles/nvue-switch/templates/nvue-config.j2

doc/source/configuration/reference/physical-network.rst

releasenotes/notes/cumulus-nvue-switch-9f52d701f6c49712.yaml

requirements.yml