Add the copyright header back to all the files.

netbox/models/writable_power_port.go

netbox/models/writable_power_port_template.go

netbox/models/writable_prefix.go

netbox/models/writable_provider.go

netbox/models/writable_rack.go

netbox/models/writable_rack_group.go

netbox/models/writable_rack_reservation.go

netbox/models/writable_region.go

netbox/models/writable_secret.go

netbox/models/writable_service.go

netbox/models/writable_site.go

netbox/models/writable_tenant.go

netbox/models/writable_topology_map.go

netbox/models/writable_virtual_chassis.go

netbox/models/writable_virtual_machine.go

netbox/models/writable_vlan.go

netbox/models/writable_vlangroup.go

netbox/models/writable_vrf.go

scripts/licensecheck.sh