Webhooks!

Webhooks can be used now.

IBLWebhook webhook = new IBLWebhook("TOKEN");
webhook.addEventListener(voteEvent -> {
    System.out.println(voteEvent.getUsername() + " Voted!")
});
webhook.start();```

IBL4J v2

I have added many things in this release.
I dont know how to document these things. Sorry for less docs

• Added IBL.getBot and IBL.getUser as get methods.
• Abstraction for different libraries.
• Introduction of modules.