feat(npc): 添加NPC数据加载、动画和对象功能

实现NPC系统的核心功能，包括：
1. 新增NpcDataLoader用于加载NPC索引和配置数据
2. 添加NpcAnimation处理NPC动画显示
3. 创建NpcObject实现NPC交互和显示逻辑
4. 在GameMapTestScene中集成测试NPC功能

Game/include/npc/NpcObject.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include "character/CharacterActionTypes.h"
+#include "npc/NpcAnimation.h"
+#include <frostbite2D/2d/text_sprite.h>
+#include <frostbite2D/2d/actor.h>
+#include <array>
+#include <optional>
+#include <string>
+
+namespace frostbite2D {
+
+class NpcObject : public Actor {
+public:
+  NpcObject() = default;
+  ~NpcObject() override = default;
+
+  bool Construction(int npcId);
+
+  void SetDirection(int direction);
+  void SetNpcPosition(const Vec2& pos);
+  void SetWorldPosition(const CharacterWorldPosition& pos);
+  void SetInteractable(bool interactable);
+  void BeginInteract();
+  void EndInteract();
+
+  bool CanInteract() const;
+  bool IsInteracting() const { return interacting_; }
+  int GetNpcId() const { return npcId_; }
+  int GetDirection() const { return direction_; }
+  const std::string& GetName() const;
+  const std::string& GetFieldName() const;
+  const std::string& GetDisplayName() const;
+  const CharacterWorldPosition& GetWorldPosition() const { return worldPosition_; }
+  bool IsAnimationFinished() const;
+
+  const npc::NpcConfig* GetConfig() const {
+    return config_ ? &config_.value() : nullptr;
+  }
+
+  void Update(float deltaTime) override;
+
+private:
+  void EnsureNameLabel();
+  void RefreshNameLabel();
+  void SyncActorPositionFromWorld();
+
+  int npcId_ = -1;
+  int direction_ = 1;
+  CharacterWorldPosition worldPosition_;
+  std::optional<npc::NpcConfig> config_;
+  RefPtr<NpcAnimation> animation_ = nullptr;
+  std::array<RefPtr<TextSprite>, 8> nameOutlineLabels_;
+  RefPtr<TextSprite> nameLabel_ = nullptr;
+  bool interactable_ = true;
+  bool interacting_ = false;
+};
+
+} // namespace frostbite2D