LttP: Rename Shop Slot 1, 2, 3 to Shop Slot Left, Center, Right

General: Move generic IDs from LttP to new Generic World
Generate: ensure thread errors are collected before data from their completion may be referenced in playthrough/spoiler

worlds/hk/__init__.py

@@ -19,6 +19,8 @@ class HKWorld(World):
     item_name_to_id = {name: data.id for name, data in item_table.items() if data.type != "Event"}
     location_name_to_id = lookup_name_to_id
 
+    hidden = True
+
     def generate_basic(self):
         # Link regions
         self.world.get_entrance('Hollow Nest S&Q', self.player).connect(self.world.get_region('Hollow Nest', self.player))