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/LibCore/System.cpp

@@ -132,9 +132,9 @@ namespace Core::System {
 
 #ifdef AK_OS_SERENITY
 
-ErrorOr<void> beep()
+ErrorOr<void> beep(Optional<size_t> tone)
 {
-    auto rc = ::sysbeep();
+    auto rc = ::sysbeep(tone.value_or(440));
     if (rc < 0)
         return Error::from_syscall("beep"sv, -errno);
     return {};