Make it easier to add new events to the events listener

Right now all the events are located in a single Listener interface so any addition to it would break all the parsers and renderers which is quite a pain...

We need to refactor all this to be able to add new stuff without breaking anything.

Some idea:

• first thing to do is to cut this big listener in peaces: an idea any would be to use annotation instead of implementing an interface(s). It also allow anyone to add any event unknown by the core rendering API
• in parser use a class proxy when sending events which test if the event is actually implemented send or skip it accordingly. That way a listener (like a renderer) just need to implement what it support. Add we can add new method in the proxy anytime without breaking anything since it's a class