feat: 集成后台任务管理功能及相关组件

- 新增后台任务管理器，支持任务的注册、执行和状态监控
- 实现自定义Hook，简化后台任务的使用和管理
- 添加示例任务，包括数据同步、健康数据更新和通知检查等
- 更新文档，详细描述后台任务系统的实现和使用方法
- 优化相关组件，确保用户体验和界面一致性

ios/digitalpilates.xcodeproj/project.pbxproj

@@ -268,6 +268,7 @@
 				"${PODS_CONFIGURATION_BUILD_DIR}/EXConstants/EXConstants.bundle",
 				"${PODS_CONFIGURATION_BUILD_DIR}/EXConstants/ExpoConstants_privacy.bundle",
 				"${PODS_CONFIGURATION_BUILD_DIR}/EXNotifications/ExpoNotifications_privacy.bundle",
+				"${PODS_CONFIGURATION_BUILD_DIR}/EXTaskManager/ExpoTaskManager_privacy.bundle",
 				"${PODS_CONFIGURATION_BUILD_DIR}/ExpoFileSystem/ExpoFileSystem_privacy.bundle",
 				"${PODS_CONFIGURATION_BUILD_DIR}/ExpoSystemUI/ExpoSystemUI_privacy.bundle",
 				"${PODS_CONFIGURATION_BUILD_DIR}/PurchasesHybridCommon/PurchasesHybridCommon.bundle",
@@ -290,6 +291,7 @@
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/EXConstants.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/ExpoConstants_privacy.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/ExpoNotifications_privacy.bundle",
+				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/ExpoTaskManager_privacy.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/ExpoFileSystem_privacy.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/ExpoSystemUI_privacy.bundle",
 				"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/PurchasesHybridCommon.bundle",