QmlProfiler: Add attach/detach menu entry

This allows one to also profile apps on device (as long as there
is a working TCP/IP connection).

src/plugins/qmlprofiler/qmlprofilertool.h

@@ -82,6 +82,8 @@ public:
 
 private slots:
     void updateProjectFileList();
+    void attach();
+    void updateAttachAction();
 
 private:
     class QmlProfilerToolPrivate;