Weight jokers by rarity in the shop (#152)

* Added weight for the rarity of jokers in the shop

* Includes manual conflict resolution

---------

Co-authored-by: JustinL-12 <jlong30@uic.edu>
Co-authored-by: MeirGavish <meir.gavish@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

include/joker.h

@@ -35,6 +35,14 @@
 #define RARE_JOKER 2
 #define LEGENDARY_JOKER 3
 
+// Percent chance to get a joker of each rarity
+// Note that this deviates slightly from the Balatro wiki to allow legendary
+// jokers to appear without spectral cards implemented
+#define COMMON_JOKER_CHANCE 70
+#define UNCOMMON_JOKER_CHANCE 25
+#define RARE_JOKER_CHANCE 5
+#define LEGENDARY_JOKER_CHANCE 0
+
 #define MAX_JOKER_OBJECTS 32 // The maximum number of joker objects that can be created at once
 
 #define DEFAULT_JOKER_ID 0
@@ -96,5 +104,6 @@ void joker_object_set_selected(JokerObject* joker_object, bool selected);
 bool joker_object_is_selected(JokerObject* joker_object);
 
 Sprite* joker_object_get_sprite(JokerObject* joker_object);
+int joker_get_random_rarity();
 
 #endif // JOKER_H