@mantine/notifications Allow global notifications auto close customization w/ call context

[dillonstreator]

I'd like to propose extending the autoClose functionality by allowing a callback to be specified (in addition to the existing number | false) that receives the NotificationData and returns number | false. This enables creating a "global" default ruleset/config on the Notifications component.
This global config should be overridable at the time of calling showNotification by specifying autoClose.

Here is an example of what the implementation could look like #5329

[arvind0598]

@rtivital do you have any opinions on this? My user-base happens to be slow readers, and this would help out quite a bit.

I'm willing to continue the work on #5329 if there are any issues with the PR or if @dillonstreator is unavailable.