Add the copyright header back to all the files.

Makefile

copyright_header.txt

netbox/client/circuits/circuits_choices_list_parameters.go

netbox/client/circuits/circuits_choices_list_responses.go

netbox/client/circuits/circuits_choices_read_parameters.go

netbox/client/circuits/circuits_choices_read_responses.go

...rcuits/circuits_circuit_terminations_create_parameters.go

...ircuits/circuits_circuit_terminations_create_responses.go

...rcuits/circuits_circuit_terminations_delete_parameters.go

...ircuits/circuits_circuit_terminations_delete_responses.go

...circuits/circuits_circuit_terminations_list_parameters.go

.../circuits/circuits_circuit_terminations_list_responses.go

...ircuits_circuit_terminations_partial_update_parameters.go

...circuits_circuit_terminations_partial_update_responses.go

...circuits/circuits_circuit_terminations_read_parameters.go

.../circuits/circuits_circuit_terminations_read_responses.go

...rcuits/circuits_circuit_terminations_update_parameters.go

...ircuits/circuits_circuit_terminations_update_responses.go

...ient/circuits/circuits_circuit_types_create_parameters.go

...lient/circuits/circuits_circuit_types_create_responses.go