🎨 Made manager attributes more flexible

Changed run_after, retryable_on and continue_on to be type Container.
We don't need them to be sets.

The performance gain of sets over small tuples is nonexistant
for in checks and the  syntax is more verbose.

src/store/managers/file_manager.py

@@ -6,7 +6,7 @@ from src.store.managers.steam_api_manager import SteamAPIManager
 class FileManager(AsyncManager):
     """Manager in charge of saving a game to a file"""
 
-    run_after = set((SteamAPIManager,))
+    run_after = (SteamAPIManager,)
 
     def manager_logic(self, game: Game, _additional_data: dict) -> None:
         game.save()