Fix AttackData constructor to use signed byte for priority instead of unsigned.

src/Library/Attacks/AttackData.cpp

@@ -4,7 +4,7 @@
 CreatureLib::Library::AttackData::AttackData(std::string name, uint8_t type,
                                              CreatureLib::Library::AttackCategory category, uint8_t power,
                                              uint8_t accuracy, uint8_t baseUsage,
-                                             CreatureLib::Library::AttackTarget target, uint8_t priority,
+                                             CreatureLib::Library::AttackTarget target, int8_t priority,
                                              std::unordered_set<std::string> flags)
     : _name(std::move(name)), _type(type), _category(category), _basePower(power), _accuracy(accuracy),
       _baseUsages(baseUsage), _target(target), _priority(priority), _flags(std::move(flags)) {}