delay execution: add Beep WinAPI

[s-ff]

Summary

The Beep WinAPI allows programs to generate simple beep sounds through the computer's speaker. It takes two parameters: frequency (in Hertz) and duration (in milliseconds).

BOOL Beep(
  [in] DWORD dwFreq,
  [in] DWORD dwDuration
);

When called, Beep invokes NtDelayExecution, which pauses the execution of the calling thread for a specified duration.

Additional context

https://thehackernews.com/2023/02/experts-warn-of-beep-new-evasive.html
https://securityliterate.com/beeeeeeeeep-how-malware-uses-the-beep-winapi-function-for-anti-analysis/