Add option for Sleep like native app has

[Abhi-xt]

Checklist

• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• I'm aware that this is a request for NewPipe itself and that requests for adding a new service need to be made at NewPipeExtractor.
• I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

I would like to request the addition of a Sleep Timer feature to the player. This option would allow users to set a time duration after which playback automatically pauses or stops.

Why do you want this feature?

Many users listen to audio or video content (e.g., music, podcasts, audiobooks) before sleeping. Without a sleep timer, playback continues indefinitely, leading to battery drain and potential data usage. Manually stopping playback every time is not practical.

Additional information

Proposed Solution:

Sleep Timer Option: Add a sleep timer button within the player interface.

Configurable Durations: Common presets (e.g., 15, 30, 45, 60 minutes) and a custom input for users to choose how long playback should continue.

Automatic Pause/Stop: When the timer expires, playback is automatically paused or stopped.

Notification/Prompt: (Optional) Display a notification or prompt when the timer is about to expire, allowing users to extend or cancel.

Benefits:

Improves user convenience, especially for those who listen while falling asleep.

Conserves battery and reduces unwanted data usage.

Aligns with user expectations from modern media players.