MultiServer: alternative data store based DataPackage retrieval

MultiServer.py

@@ -461,10 +461,25 @@ def _load(self, decoded_obj: dict, game_data_packages: typing.Dict[str, typing.A
                 del data["location_name_groups"]
             del data["item_name_groups"]  # remove from data package, but keep in self.item_name_groups
         self._init_game_data()
+        for game_name, game_package in self.gamespackage.items():
+            key = f"datapackage_checksum_{game_name}"
+            self.public_stored_data_keys.add(key)
+            self.read_data[key] = lambda lgame=game_name: self.checksums.get(lgame, None)
+
+            key = f"item_name_to_id_{game_name}"
+            self.public_stored_data_keys.add(key)
+            self.read_data[key] = lambda lgame=game_name: self.gamespackage[lgame]["item_name_to_id"]
+
+            key = f"location_name_to_id_{game_name}"
+            self.public_stored_data_keys.add(key)
+            self.read_data[key] = lambda lgame=game_name: self.gamespackage[lgame]["location_name_to_id"]
+
         for game_name, data in self.item_name_groups.items():
-            self.read_data[f"item_name_groups_{game_name}"] = lambda lgame=game_name: self.item_name_groups[lgame]
+            self.read_data[f"item_name_groups_{game_name}"] = \
+                lambda lgame=game_name: self.item_name_groups[lgame]
         for game_name, data in self.location_name_groups.items():
-            self.read_data[f"location_name_groups_{game_name}"] = lambda lgame=game_name: self.location_name_groups[lgame]
+            self.read_data[f"location_name_groups_{game_name}"] = \
+                lambda lgame=game_name: self.location_name_groups[lgame]
 
     # saving