Document how to add more protocol support to chatty
chatty has experimental support for several protocols and it would be good to explain how to get more well working ones using e.g. new or existing libpurple plugins. This would allow to use a consistent workflow for IMs and to benefit from polish in the chatty UI for more protocols. So a guide to get development env set up and to the relevant liburple docs would go a long way.
/cc @andrea.schaefer if that makes sense