feat(backend): consolidate queue logic for scheduling

backend/database/models/scheduledlog.py

@@ -0,0 +1,12 @@
+from dataclasses import dataclass
+from datetime import datetime
+from ._base import BaseModel
+
+
+@dataclass()
+class ScheduledLog(BaseModel):
+    LogId: int
+    MemberId: int
+    ServiceId: int
+    ScheduledAt: datetime
+    ExpiresAt: datetime