refactor(automations): vertical-slice actions and triggers by domain

surfsense_backend/app/automations/triggers/manual/definition.py

@@ -0,0 +1,16 @@
+"""``manual`` ``TriggerDefinition`` registration."""
+
+from __future__ import annotations
+
+from ..store import register_trigger
+from ..types import TriggerDefinition
+from .params import ManualTriggerParams
+
+MANUAL_TRIGGER = TriggerDefinition(
+    type="manual",
+    description="Fire on a user-initiated 'Run now' invocation.",
+    params_schema=ManualTriggerParams.model_json_schema(),
+    payload_schema={"type": "object"},
+)
+
+register_trigger(MANUAL_TRIGGER)