Send an email to authors when their content is flagged by a user
**Is your feature request related to a problem? Please describe.**
When I create content in Decidim and someone flags the content to be moderated, I want to be notified about it.
This is related to !15627 (https://meta.decidim.org/processes/roadmap/f/122/proposals/15627)
**Describe the solution you'd like**
When this happens, I want to receive a notification/email about this. The notification will not include the user who reported the content, only the reason.
**Describe alternatives you've considered**
**Does this issue could impact on users private data?**
Report inappropriate content
Is this content inappropriate?