Add Event suggestions

[notTamion]

Adds event suggestions to paper (velocity doesn't have an general class all Events extend it seems). This does use a third party reflection library (because i am not willing to try and figure out how to do this myself) which we would either have to include in the jar or use the PluginLoader. I can understand if you don't want to use a library, in which case i will just keep this on my fork.