Screenshot notification

Software that will send screenshot notification:

• Telegram: https://telegram.org/faq?setln=be#q-can-i-be-certain-that-my-conversation-partner-doesn-39t-take-a
• Wickr: https://support.wickr.com/hc/en-us/articles/360001710133-Wickr-Screenshot-Detection

This is a really important feature. However, if it's closed, can you please list it in https://docs.jami.net/developer/feature-requests.html ?

Kind regards.