Update list implementation to work with memory pools (#168)

* Introduce indexed list implementation

* Fix CI tests for pool

* Take bitset out of pool

* Replace joker bitset interactions with wrappers

* Add bitset tests

* Add test to gitignore

---------

Co-authored-by: rfehr-idexx <ric-fehr@idexx.com>

include/def_balatro_mempool.h

@@ -1,6 +1,7 @@
 #include "sprite.h"
 #include "joker.h"
 #include "card.h"
+#include "list.h"
 
 POOL_ENTRY(Sprite, MAX_SPRITES);
 POOL_ENTRY(SpriteObject, MAX_SPRITE_OBJECTS);
@@ -8,3 +9,4 @@ POOL_ENTRY(Joker, MAX_ACTIVE_JOKERS);
 POOL_ENTRY(JokerObject, MAX_ACTIVE_JOKERS);
 POOL_ENTRY(Card, MAX_CARDS);
 POOL_ENTRY(CardObject, MAX_CARDS_ON_SCREEN);
+POOL_ENTRY(ListNode, MAX_LIST_NODES);