新增poolcomponent 对象池组件

demo/src/game/MainScene.ts

@@ -23,6 +23,15 @@ class MainScene extends Scene {
             player2.addComponent(new BoxCollider());
         }
 
+        let pool = new ComponentPool<SimplePooled>(SimplePooled);
+        let c1 = pool.obtain();
+        let c2 = pool.obtain();
+        pool.free(c1);
+        let c1b = pool.obtain();
+
+        console.log(c1 != c2);
+        console.log(c1 == c1b);
+
         let button = new eui.Button();
         button.label = "切换场景";
         this.addChild(button);

demo/src/game/SimplePooled.ts

@@ -0,0 +1,5 @@
+class SimplePooled extends PooledComponent {
+    public reset(){
+        
+    }
+}