Toast notification timeout and animation

Currently, the toast notifications are being populated with dummy data, and are static. Make it so that toast notifications have a setTimeout and an animation countdown (similar to that on mintbean.io)

- [ ] Notifications should open with an animation.
- [ ] Each notification be configured to have a timer. Notifications with a timer should have a countdown bar, similar to mintbean.io
- [ ] Notifications should close with an animation when you click "close"
- [ ] Notifications should close with an animation when the countdown timer expires.