Feature request: Add timeout for deleting the container after closing the last container tab

[MurzNN]

Now the created container gets deleted immediately after closing the last tab. But pretty often I forget about this and try to open the tab again in this container (to keep the created cookies), but it is already deleted.
So, would be great to implement a timeout for xx minutes (eg 5 mins) before deleting orphaned containers.

[ninevra]

Thanks for the feature request! This is definitely a feature i'd like to have too.

i don't know if i'll get around to working on this extension again, but i'd be open to a PR if anyone wants to implement this.