[RFE] add new extension "device-profile" for port

[Xinran WANG]

A device_profile is a notion of Cyborg project, please refer to https://docs.openstack.org/api-ref/accelerator/v2/index.html#device-profiles

It is a named set of user requirements for one or more accelerators. It can be viewed as a flavor for devices. Broadly it includes two things: the desired amounts of specific resource classes and the requirements that the resource provider(s) must satisfy.

Neutron needs to add a new extension "device_profile" which filled by the name of a device profile indicating an accelerator that can be associated with a neutron port, in order to offload some networking workload on the smartnic.

Please refer to nova spec for the details:
https://review.opendev.org/c/openstack/nova-specs/+/742785/13/specs/wallaby/approved/support-sriov-smartnic.rst#261