(trivial) log Qt version at startup

electrum/gui/qt/__init__.py

@@ -92,6 +92,7 @@ class ElectrumGui(Logger):
     def __init__(self, config: 'SimpleConfig', daemon: 'Daemon', plugins: 'Plugins'):
         set_language(config.get('language', get_default_language()))
         Logger.__init__(self)
+        self.logger.info(f"Qt GUI starting up... Qt={QtCore.QT_VERSION_STR}, PyQt={QtCore.PYQT_VERSION_STR}")
         # Uncomment this call to verify objects are being properly
         # GC-ed when windows are closed
         #network.add_jobs([DebugMem([Abstract_Wallet, SPV, Synchronizer,