Notify users about comments on their projects

[FeniXb3]

Currently you have to check public details page for each of your projects to check if there are any new comments on them. It would be useful if I can be notified about new comments.

Corresponding message on Discord - https://discord.com/channels/593735633130749972/667401412405362688/867399225846399039

It might be worth to also consider notifications for comments on projects of other people, where you commented. But I think it might be done separately.

[TinkerStudio]

I guess at this stage the easiest way would be by email notification? Maybe with an 'opt in/out' option on the profile page. Maybe if the forum gets ever extended to have private messaging notifications could be send there. Just a thought.