feat(db): 新增crud.total方法

core/db/crud.py

@@ -149,6 +149,14 @@ class CRUD:
         await self.session.commit()
         return True
 
+    async def total(self, filters: dict, model: Model = None) -> int:
+        model = model or self.model
+
+        result = await self.session.execute(select(func.count()).filter(
+            *self.build_filter_conditions(filters, model))
+        )
+        return result.scalar()
+
     def build_filter_conditions(self, filters: Dict[str, Any], model: Model) -> tuple:
         conditions = []