Add option to prevent notification from auto-hiding

[AngelKrak]

Currently, notifications disappear automatically after a set duration. I’d like to add an option to keep the notification visible until it is manually closed.

This could be achieved by:

• Setting duration to 0 to disable auto-hide.
• Introducing a new prop that allows configuring whether the notification should close automatically after X seconds or require manual dismissal.

This change would provide more flexibility in handling notifications based on different use cases. Let me know your thoughts!