Kernel+Userland: Add support for using the PCSpeaker with various tones

Author: https://github.com/supercomputer7
Commit: 11a7e21c2a
Pull-request: https://github.com/SerenityOS/serenity/pull/17687
Reviewed-by: https://github.com/AtkinsSJ

Userland/Libraries/LibVT/TerminalWidget.cpp

@@ -1067,7 +1067,7 @@ void TerminalWidget::beep()
         return;
     }
     if (m_bell_mode == BellMode::AudibleBeep) {
-        sysbeep();
+        sysbeep(440);
         return;
     }
     m_visual_beep_timer->restart(200);