feat(render): 使用Color类替换Vector3f表示光源颜色

- 在LightSource类中引入java.awt.Color类型
- 添加colorToVector3f和vector3fToColor静态转换方法- 修改构造函数以接受Color参数并自动转换
- 更新LightSourceData反序列化逻辑以使用新颜色格式
- 在测试类中使用标准Color常量设置光源
- 移除旧的直接Vector3f颜色构造方式

src/main/java/com/chuangzhou/vivid2D/test/ModelRenderLightingTest.java

@@ -14,6 +14,7 @@ import org.lwjgl.glfw.GLFWVidMode;
 import org.lwjgl.opengl.GL;
 import org.lwjgl.system.MemoryUtil;
 
+import java.awt.*;
 import java.nio.ByteBuffer;
 import java.util.Random;
 
@@ -135,15 +136,15 @@ public class ModelRenderLightingTest {
         body.addChild(rightLeg);
 
         LightSource ambientLight = new LightSource(
-                new Vector3f(0.5f, 0.5f, 0.5f), // 灰色
+                Color.GRAY,
                 0.3f
         );
         ambientLight.setAmbient(true);
         model.addLight(ambientLight);
 
         // 添加光源
-        model.addLight(new LightSource(new Vector2f(-100, -100), new Vector3f(1f, 0f, 0f), 20f));
-        model.addLight(new LightSource(new Vector2f(150, 150), new Vector3f(0f, 0f, 1f), 20f));
+        model.addLight(new LightSource(new Vector2f(-100, -100), Color.ORANGE, 100f));
+        //model.addLight(new LightSource(new Vector2f(150, 150), new Color(1f, 1f, 1f), 200f));
     }
 
     private Texture createSolidTexture(int w, int h, int rgba) {