Add VT26 style shuffling of dungeon items

Also adds new VT26 algorithm type that uses this, and makes it the default.
the new type also includes the GT junk items randomization.

Dungeons.py

@@ -102,6 +102,27 @@ def fill_dungeons(world):
     world.state._clear_cache()
 
 
+def fill_dungeons_restrictive(world):
+    from Main import fill_restrictive
+    all_state_base = world.get_all_state()
+
+    world.push_item(world.get_location('[dungeon-D3-B1] Skull Woods - South of Big Chest'), ItemFactory('Small Key (Skull Woods)'), False)
+    world.get_location('[dungeon-D3-B1] Skull Woods - South of Big Chest').event = True
+
+    shuffled_locations=world.get_unfilled_locations()
+    random.shuffle(shuffled_locations)
+    
+    dungeon_items = [item for dungeon in world.dungeons for item in dungeon.all_items]
+    
+    #sort in the order Big Key, Small Key, Other before placing dungeon items
+    sort_order={"BigKey":3,"SmallKey":2};
+    dungeon_items.sort(key=lambda item:sort_order.get(item.type, 1) )
+    
+    fill_restrictive(world, all_state_base, shuffled_locations, dungeon_items)
+    
+    world.state._clear_cache()
+
+
 dungeon_music_addresses = {'Armos - Pendant': [0x1559A],
                            'Lanmolas - Pendant': [0x1559B, 0x1559C, 0x1559D, 0x1559E],
                            'Moldorm - Pendant': [0x155C5, 0x1107A, 0x10B8C],