Add an optional chime/notification for end of execution

[PentageerJoshuaMeetsma]

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Problem

I would like it if a notification appeared and played a chime happened when my batch of cells finished executing because then I would know when my code was finished executing, without needing to constantly pay attention to it.

Proposed Solution

Add an option so that when all cells have finished executing, a notification will appear and play a chime or sound

Additional context

Jupyter-Notify solved this by adding some cell magic to send a notification when a single cell is finished executing, but the user has to manually decide which cells to receive notifications about. Instead, I would like to have an option to send a notification to me when the whole batch of cells I'm executing finish.

It would also be useful if a different sound played if one of the cells had an error or exception

This should be an optional setting that users can turn off easily