信号槽任务管理部分，增加了导出、导入宏指令

src/Settings/TaskListClass.h

@@ -30,7 +30,7 @@ namespace Setting {
 
 
 
-	class TaskDesc:public QObject{
+	class SETTINGAPI TaskDesc:public QObject{
 		Q_OBJECT
 	public:
 		TaskDesc(QObject* parent = nullptr);
@@ -61,7 +61,7 @@ namespace Setting {
 
 
 	// 任务管理类
-	class TaskDescManager:public QObject{
+	class SETTINGAPI TaskDescManager:public QObject{
 		Q_OBJECT
 	public:
 		TaskDescManager(QObject* parent = nullptr);