Toast: new close and life-end methods

[vasiliyaltunin]

Add callback to Toast that fire up when toast message closed on timeout.

For example on password change i would like to redirect to login page after message about succes password change closed.

[mroettgen]

I think it would be preferrable to have events that one can bind to in these cases, e.g. @close and @timeout, since @close can already be used for messages

[Jogai]

@cagataycivici said in discord:

Sounds good to me, we already have an internal close event, just needs to expose it. Please create a ticket at github and we'll add it to the plan. It'd help to quote this comment as well as a reference.

[cagataycivici]

Thanks Jogai