feat: add enum definitions for SceneType and Orientation

src/enums/Orientation.ts

@@ -0,0 +1,4 @@
+export enum Orientation {
+  Landscape = "landscape",
+  Portrait = "portrait",
+}

src/enums/SceneType.ts

@@ -0,0 +1,4 @@
+export enum SceneType {
+  Normal = 0,    // 普通场景 - 退出时销毁
+  Resident = 1,  // 常驻场景 - 只隐藏不销毁
+}

src/enums/index.ts

@@ -0,0 +1,13 @@
+export { Orientation } from './Orientation';
+export { SceneType } from './SceneType';
+
+// Legacy exports for backward compatibility
+export enum EDirection {
+    Landscape="landscape",
+    Portrait="portrait",
+}
+
+export enum EP {
+    Resident, // 常驻场景
+    Normal // 普通场景
+}