feat(backend): consolidate queue logic for scheduling

backend/database/models/acceptedlog.py

@@ -0,0 +1,11 @@
+from dataclasses import dataclass
+from datetime import datetime
+from ._base import BaseModel
+
+
+@dataclass()
+class AcceptedLog(BaseModel):
+    LogId: int
+    MemberId: int
+    ServiceId: int
+    AcceptedAt: datetime