Need to add Time.time Created/Updated fields inside results.go, mapped from json:"updated_at"/json:"created_at"

General API reference: https://developer.openstack.org/api-ref/network/v2/?expanded=list-floating-ips-detail,show-floating-ip-details-detail#show-floating-ip-details

that fields defined in standard_attr.py , that means that it should be applied to all neutron-resources though decorator:
https://github.com/openstack/neutron/blob/041203f1bb1a9cb814ab58c6088d0229cfe9d9bb/neutron/db/standard_attr.py#L181
https://github.com/openstack/neutron/blob/041203f1bb1a9cb814ab58c6088d0229cfe9d9bb/neutron/db/models/l3.py#L70-L71