This is a chat service part of the Bot::Backbone chatbot ecosystem. It provides a service for connecting to XMPP (aka Jabber) servers. This provides services for connecting to group chats (called MUCs or multi-user chats in XMPP parlance) and interacting with users via instant message.
The preferred installation would be to fetch it from CPAN:
cpanm Bot::Backbone::Service::JabberChat
or if you don't have App::cpanminus installed (you should), you can run:
perl -MCPAN -e 'install Bot::Backbone::Service::JabberChat'