CMake: forward dirty signal in server-mode

This fixes auto-running cmake on changes to the project files.

Change-Id: I652b48b243b5decb6927b1619c47527af83d7f03
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/servermodereader.h

@@ -62,6 +62,7 @@ private:
     void handleReply(const QVariantMap &data, const QString &inReplyTo);
     void handleError(const QString &message);
     void handleProgress(int min, int cur, int max, const QString &inReplyTo);
+    void handleSignal(const QString &signal, const QVariantMap &data);
 
     struct Target;
     struct Project;