[POC] Event for failed login attempts

lib/composer/composer/autoload_classmap.php

lib/composer/composer/autoload_static.php

lib/private/Authentication/Events/LoginFailed.php

lib/private/Authentication/Listeners/LoginFailedListener.php

lib/private/Authentication/Login/LoggedInCheckCommand.php

lib/private/Server.php

lib/private/User/Session.php

lib/public/Authentication/Events/LoginFailedEvent.php

tests/lib/Authentication/Login/LoggedInCheckCommandTest.php