Move pickle functions to PickleRepo

prophet/domain/improvement_repo.py

@@ -1,13 +1,19 @@
-
 from typing import Protocol
 
 from prophet.domain.improvement import Improvement
 
 
+class ImprovementNotFoundError(Exception):
+    pass
+
+
 class IImprovementRepo(Protocol):
     def add(self, improvement: Improvement) -> None:
         raise NotImplementedError
 
+    def add_all(self, improvements: list[Improvement]) -> None:
+        raise NotImplementedError
+
     def get(self, id: str) -> Improvement:
         raise NotImplementedError