RunExtensions: Move onResultReady and onFinished into asynctask.h

Change-Id: I96dbf5b0253251224ae678172cd5fca12b34326a
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/coreplugin/locator/locatorwidget.cpp

@@ -14,6 +14,7 @@
 #include "../modemanager.h"
 
 #include <utils/algorithm.h>
+#include <utils/asynctask.h>
 #include <utils/appmainwindow.h>
 #include <utils/fancylineedit.h>
 #include <utils/fsengine/fileiconprovider.h>

src/plugins/coreplugin/plugininstallwizard.cpp

@@ -18,7 +18,6 @@
 #include <utils/pathchooser.h>
 #include <utils/qtcassert.h>
 #include <utils/qtcprocess.h>
-#include <utils/runextensions.h>
 #include <utils/temporarydirectory.h>
 #include <utils/wizard.h>
 #include <utils/wizardpage.h>

src/plugins/coreplugin/progressmanager/progressmanager.cpp

@@ -109,7 +109,7 @@ namespace Core {
     start a task concurrently in a different thread.
     QtConcurrent has several different functions to run e.g.
     a class function in a different thread. Qt Creator itself
-    adds a few more in \c{src/libs/qtconcurrent/runextensions.h}.
+    adds a few more in \c{src/libs/utils/asynctask.h}.
     The QtConcurrent functions to run a concurrent task return a
     \c QFuture object. This is what you want to give the
     ProgressManager in the addTask() function.