Issue #3308063 by el7cosmos: Deprecate support for eck module

composer.json

...ore_event_dispatcher/src/Event/File/FileDownloadEvent.php

...re_event_dispatcher/src/Event/Form/FormBaseAlterEvent.php

...event_dispatcher/preprocess_event_dispatcher.services.yml

...s_event_dispatcher/src/Event/EckEntityPreprocessEvent.php

...ispatcher/src/Factory/EckEntityPreprocessEventFactory.php

...vent_dispatcher/src/Variables/EckEntityEventVariables.php

...atcher_test/preprocess_event_dispatcher_test.services.yml

...t_dispatcher/tests/src/Kernel/PreprocessEventPassTest.php

...ocess_event_dispatcher/tests/src/Unit/EntityEventTest.php

...nt_dispatcher/tests/src/Unit/EntityEventVariablesTest.php

phpcs.xml

phpcs.xml.dist