L2SS-1019: Create and use obeservation control JSON schema

.gitignore

docker-compose/device-observation-control.yml

docker-compose/schemas.yml

docker-compose/schemas/Dockerfile

docker-compose/schemas/definitions/observation-settings.json

docker-compose/schemas/definitions/pointing.json

docker-compose/schemas/definitions/sap.json

sbin/run_integration_test.sh

tangostationcontrol/requirements.txt

tangostationcontrol/tangostationcontrol/common/__init__.py

...trol/tangostationcontrol/common/observation_controller.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

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

...ontrol/tangostationcontrol/devices/observation_control.py

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