notification-banner: Add slide-up animation to banner
Add slide-up animation to the notification-banner so that it will disappear with slide-up animation.
Demo
Before
Screencast_from_2024-10-09_09-59-29
After
Screencast_from_2024-10-09_09-58-35
Closes: #377 (closed)
Edited by Gotam Gorabh