PROMPTCHAT-667
To create new trigger event which is called "move-contact-to-blacklist" where anyone who requested this will never be able to get another message from the system..
So, nothing gets deleted but just moved to a separate "Blacklist database" which ensures that whoever is in this Blacklist database will never get a message/campaign from the business.
This "Blacklist database" should be manually editable by Administrators only (adding/removing contacts from/to) and has to have a timestamp.