feat: emit event if it is taking more than x seconds to download the song

[vikram-sapate]

Sometime it takes more than 1 minute to download the song.
Requesting to emit the event if it is taking more than x seconds and stop the ytdl stream.
Event can be used to send the res to ui & ui can display appropriate message.

@tobilg @ytb2mp3

[ytb2mp3]

You can either submit a PR, or use the progress event to build this for your service by yourself. Thanks!