McuSupport: generate kits automatically on plugin initialization

Fixes: QTCREATORBUG-24354
Change-Id: I26587102bd24d1678707ca1d9160c84149e77c8e
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/mcusupport/mcusupportplugin.cpp

@@ -95,6 +95,7 @@ void McuSupportPlugin::extensionsInitialized()
 
     connect(KitManager::instance(), &KitManager::kitsLoaded, [](){
         McuSupportOptions::removeOutdatedKits();
+        McuSupportOptions::createAutomaticKits();
         McuSupportPlugin::askUserAboutMcuSupportKitsSetup();
     });
 }