L2SS-1101: As an open source committee, I want the license mentioned in every source file

tangostationcontrol/tangostationcontrol/common/cables.py

...ostationcontrol/tangostationcontrol/common/calibration.py

...tationcontrol/tangostationcontrol/common/configuration.py

tangostationcontrol/tangostationcontrol/common/constants.py

tangostationcontrol/tangostationcontrol/common/entrypoint.py

tangostationcontrol/tangostationcontrol/common/health.py

...tationcontrol/tangostationcontrol/common/lofar_logging.py

tangostationcontrol/tangostationcontrol/common/measures.py

...trol/tangostationcontrol/common/observation_controller.py

tangostationcontrol/tangostationcontrol/common/states.py

...tationcontrol/tangostationcontrol/common/type_checking.py

...tioncontrol/tangostationcontrol/configuration/__init__.py

...control/tangostationcontrol/configuration/_json_parser.py

...l/tangostationcontrol/configuration/configuration_base.py

...tangostationcontrol/configuration/observation_settings.py

...tioncontrol/tangostationcontrol/configuration/pointing.py

tangostationcontrol/tangostationcontrol/configuration/sap.py

tangostationcontrol/tangostationcontrol/devices/__init__.py

...tationcontrol/tangostationcontrol/devices/antennafield.py

tangostationcontrol/tangostationcontrol/devices/apsct.py