Adds setter for nickname.

Signed-off-by: Deukhoofd <Deukhoofd@gmail.com>

src/Battling/Models/Creature.hpp

@@ -111,6 +111,7 @@ namespace CreatureLib::Battling {
         inline bool IsOnBattleField() const { return _onBattleField; }
 
         inline std::string_view GetNickname() const noexcept { return _nickname; }
+        inline void SetNickname(std::string nickname) noexcept { _nickname = nickname; }
         const CreatureLib::Library::TalentIndex& GetRealTalent() const noexcept { return _talentIndex; }
         const ArbUt::StringView& GetActiveTalent() const;