Port core API routes for sites and devices

Data/Engine/domain/device_views.py

@@ -0,0 +1,28 @@
+"""Domain objects for saved device list views."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Dict, List
+
+__all__ = ["DeviceListView"]
+
+
+@dataclass(frozen=True, slots=True)
+class DeviceListView:
+    id: int
+    name: str
+    columns: List[str]
+    filters: Dict[str, object]
+    created_at: int
+    updated_at: int
+
+    def to_dict(self) -> Dict[str, object]:
+        return {
+            "id": self.id,
+            "name": self.name,
+            "columns": self.columns,
+            "filters": self.filters,
+            "created_at": self.created_at,
+            "updated_at": self.updated_at,
+        }