Finish event handling

[kyb3r]

I need help with finishing off event handling. It'd be greatly appreciated if you pitched in. Example:

    async def handle_message_create(self, data):
        message = Message(self.client, data)
        self.client.messages.add(message)
        await self.client.emit('message', message)

So the basic format is to make a function f'handle_{event}' and make an object based off the data received. After that just make changes to the client's storage and emit the event. All this happens in the EventHandler class.

[jorivanee]

I'll work on this @verixx