fix(worker-generator): 映射文件不再放入 workers 目录避免微信编译错误

examples/wechat-worker-demo/src/index.ts

@@ -0,0 +1,6 @@
+/**
+ * ESEngine Worker System 微信小游戏示例
+ * ESEngine Worker System WeChat Mini Game Example
+ */
+export { Position, Velocity, Physics, Renderable } from './components';
+export { PhysicsWorkerSystem } from './systems/PhysicsWorkerSystem';