L2SS-1866: Emit custom CHANGE_EVENTs

tangostationcontrol/tangostationcontrol/common/events/__init__.py

+#  Copyright (C) 2024 ASTRON (Netherlands Institute for Radio Astronomy)
+#  SPDX-License-Identifier: Apache-2.0
+
+from .subscriptions import EventSubscriptions
+from .change_events import ChangeEvents
+
+__all__ = ["EventSubscriptions", "ChangeEvents"]