PROTON-781: Added the Disposition and DispositionType classes to the Ruby engine APIs.
PROTON-781: Added the Condition class to the Ruby engine APIs.
PROTON-781: Added the Connection and ConnectionState classes to Ruby engine APIs.
PROTON-781: Added the Event and EventType classes to the Ruby engine APIs.
PROTON-781: Added the Collector class to the Ruby engine APIs.
PROTON-781: Created the Endpoint mixin for the Ruby engine APIs.