L2SS-1489: Add Observation support for Dithering, DAB filter, HBA element selection.

.gitlab-ci.yml

CDB/stations/hba_core.json

CDB/stations/hba_remote.json

docker-compose/http-json-schemas/definitions/dithering.json

docker-compose/http-json-schemas/definitions/hba.json

...e/http-json-schemas/definitions/observation-settings.json

tangostationcontrol/docs/source/observing.rst

...tegration_test/default/devices/test_device_observation.py

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

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

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

...ioncontrol/tangostationcontrol/configuration/dithering.py

tangostationcontrol/tangostationcontrol/configuration/hba.py

...tangostationcontrol/configuration/observation_settings.py

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

...tangostationcontrol/devices/base_device_classes/mapper.py

...stationcontrol/tangostationcontrol/devices/observation.py

...tangostationcontrol/test/devices/test_observation_base.py

tangostationcontrol/test/configuration/_mock_requests.py

...oncontrol/test/configuration/test_observation_settings.py