Make all success alerts disappear after some time

[IoannisSina]

The alert messages are now closed by the users. This issue aims to make them disappear on their own after some time.

[Vansh-Baghel]

Hey, does this issue still needs to be fixed?

[IoannisSina]

Yes it's still an active issue.

[Vaibhav234k]

I tried to solve it and hopefully that solution suits required solution. I have given pull request for this issue