Add email notificaitons about new user reviews for an extension

[varaduMSFT]

Thank you so much for the feature! It will be cool add email notifications about new reviews for my extension!

Originally posted by @NabokD in https://github.com/microsoft/MicrosoftEdge-Extensions/discussions/18#discussioncomment-2767733

[sonakshimore]

Feature request from @TwitchPreviews:

The option to enable email notifications for:

1. New review on extension product page
2. When a user rates the extension

[june07]

Interesting request... any updates from the team as to if this will be implemented? If not it might be a cool feature to add to this project I built: https://asss.june07.com...