重构项目结构：整理gitignore，移动source目录到根目录，统一依赖管理

src/Utils/index.ts

@@ -0,0 +1,17 @@
+export * from './Extensions';
+export * from './Pool';
+export * from './Emitter';
+export * from './GlobalManager';
+export * from './PerformanceMonitor';
+export { Time } from './Time';
+export { 
+    WasmEcsCore, 
+    ecsCore, 
+    initializeEcs, 
+    EntityId, 
+    ComponentMask, 
+    QueryResult,
+    PerformanceStats as WasmPerformanceStats,
+    WasmLoader,
+    JavaScriptFallback
+} from './Wasm';