Show elapsed time during queries and show execute and plan time above query explain.

mainwindow.h

@@ -3,6 +3,7 @@
 
 #include "asyncdbconnection.h"
 #include "tsqueue.h"
+#include <QLabel>
 #include <QMainWindow>
 #include <QSocketNotifier>
 #include <memory>
@@ -48,6 +49,12 @@ public:
 
 private:
 	TSQueue m_taskQueue;
+	QLabel *m_timeElapsedLabel;
+	std::unique_ptr<QTimer> m_timer;
+	std::chrono::time_point<std::chrono::steady_clock> m_startTime;
+
+	void startTimer();
+	void endTimer();
 
 
 	std::unique_ptr<Ui::MainWindow> ui;
@@ -73,6 +80,9 @@ private slots:
 	void receiveNotice(Pgsql::ErrorDetails notice);
 
 	void processCallableQueue();
+
+	void addLog(QString s);
+	void updateTimer();
 };
 
 #endif // MAINWINDOW_H