Make rapidpro calling functions top level fns
Make rapidpro calling functions top level fns

Make genAndPostRapidproContact and postContactToRapidpro top level
functions.
Have genRapidproContact take extraFields which are extra fields that are not in
the user's FB profile rapidpro
Export genAndPostRapidpro contact

The point is to slowly get rid of the init function and have functions be more
pure not depending on a constructor's state

Signed-off-by: Njagi Mwaniki <b6a4ba60ad861b9c9afb6daea7294be4be68f44c@urbanslug.com>

goodbotai/borq,goodbotai/borq