CMake: Report progress during project configuration

Change-Id: Icabc4a417a67984acaad0f14c6521f103621e7ab
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/builddirmanager.h

@@ -36,6 +36,7 @@
 #include <utils/fileutils.h>
 
 #include <QByteArray>
+#include <QFutureInterface>
 #include <QObject>
 #include <QSet>
 
@@ -109,6 +110,7 @@ private:
 
     // For error reporting:
     ProjectExplorer::IOutputParser *m_parser = nullptr;
+    QFutureInterface<void> *m_future = nullptr;
 };
 
 } // namespace Internal