Reworking of UI to be more similar to regular chats (maybe)

[MihanEntalpo]

Perhaps it is worth redoing the entire correspondence system to a more classic "chat":

1. List of recipients on the left
2. The "all recipients" item, where everyone is located
3. Filtering incoming messages by whether the sender of the message is in the selected chat or not
4. Then you will have to display your messages separately, without actually sending and receiving, but indicating "to whom it was sent", then you can display messages in those chats where there is a recipient