First version of the `tone notification` widget. Simply emit a sound

This PR add the first widgets and common utils for notifications

Tone notifier

emits a sound and a pop up message when a new object is received. Both an be turn off

timer

simple widget which keep an object for several seconds and then release it

Email base class

add the EmailTask able to send an email if executed inside esrf. There is no dedicated widget class for this one as it might depend on the project itself how they want to expose it and which information it can contain.

But the generic GUI is stored in ewoksnotify.gui.email

A usage example can be found in https://gitlab.esrf.fr/tomotools/tomwer/-/blob/main/orangecontrib/tomwer/widgets/control/EmailOW.py?ref_type=heads

ICAT

Same as for the Email use case. For now we only provide the PublishProcessedDataFolderTask which can do the publication. Not sure that the widget will be generic. Or else is should take a common class in entry IcatProvider able to get function like get_beamline(), get_proposal(), get_dataset, get_path...

An example of usage can be found in https://gitlab.esrf.fr/tomotools/tomwer/-/blob/main/orangecontrib/tomwer/widgets/icat/PublishProcessedDataOW.py?ref_type=heads