Require a nickname in anonymous 1:1 chats #3923
Description
Is your feature request related to a problem? Please describe.
It is possible to use Converse.JS to auto-join a certain room using the #converse/room?jid= parameter. In this case, the user will be asked for a nickname and join the room under that nickname.
A similar parameter works for 1:1 chats, using #converse/chat?jid= - however, it directly goes into the chat with the target JID, and open an "add contact" dialog - #3885
Describe the solution you'd like
Anonymous servers assign a randomized JID to the logged in client, so the recipient gets a message from a randomized JID, without any way for the ConverseJS user to "identify" themselves.
It would be great to have the same workflow as when anonymously joining MUCs, i.e. ask the user for a nickname, and use that as the XEP-0172 nickname (published to PEP if allowed by the server, and put into the <message> otherwise.