feat(gui): 为通知弹窗添加入场和出场动画

- 新增 notify.anim 动画文件，实现从右向左滑入和淡出效果
- 调整弹窗尺寸和文本布局以适配动画效果
- 启用动画组件并配置默认播放

assets/resources/gui/anim/notify.anim.meta

@@ -0,0 +1,13 @@
+{
+  "ver": "2.0.3",
+  "importer": "animation-clip",
+  "imported": true,
+  "uuid": "c0d7c1dc-c150-4a47-80b7-826fa74203dd",
+  "files": [
+    ".cconb"
+  ],
+  "subMetas": {},
+  "userData": {
+    "name": "notify"
+  }
+}