[Worker] Log. how long it takes to quitAndWait a worker

* sometimes the shutdown sequence of swift takes extremly long, this is to identify which workers are affected
* reduced "wait time"
* function so each worker can have its own "wait" time
* for a worker there are 2 "waits", the quitAndWait of the worker and the wait of CRegularThread (dtor)


Originally Ref T145, T647

src/blackmisc/simulation/backgroundvalidation.h

@@ -75,6 +75,10 @@ namespace BlackMisc
             //! Validated for simulator
             void validated(const CSimulatorInfo &simulator, const CAircraftModelList &validModels, const CAircraftModelList &invalidModels, bool stopped, const CStatusMessageList &msgs);
 
+        protected:
+            //! \copydoc CContinuousWorker::waitTimeoutMs
+            virtual unsigned long waitTimeoutMs() const override;
+
         private:
             mutable QReadWriteLock m_lock;        //!< lock snapshot
             std::atomic_bool m_inWork { false };  //!< indicates a running update