feat: added autoclosing for taskserver setup snackbar

[rohansen856]

Description

The SnackBar widget was created without a duration parameter. As duration is not specified, the SnackBar will remain visible until explicitly dismissed or until a new SnackBar is shown. This caused the banner to stay on screen indefinitely, creating a poor user experience.

1. Added duration: const Duration(seconds: 4) to the SnackBar constructor also async Timer to close the snackbar forcefully in 4s.
2. The user can now also swipe to cancel the snackbar

Fixes #577

Screenshots

Checklist

• Tests have been added or updated to cover the changes
• Documentation has been updated to reflect the changes
• Code follows the established coding style guidelines
• All tests are passing

[SGI-CAPP-AT2]

Keep the old style
It should be attached to bottom of screen similar to other snackbars in the App

[rohansen856]

Keep the old style It should be attached to bottom of screen similar to other snackbars in the App

Sure thing! Also in that case should i keep the swipe to dismiss functionality or discard that too...?

[SGI-CAPP-AT2]

Keep the old style It should be attached to bottom of screen similar to other snackbars in the App

Swipe down to dismiss should be there. (No Left or Right)

[rohansen856]

Keep the old style It should be attached to bottom of screen similar to other snackbars in the App

Swipe down to dismiss should be there. (No Left or Right)

Got it! implementing with the next commit.