Rewrite hooking system to Json

[JKetelaar]

Currently we're using xml, it's quite outdated and hard to manage in systems.
Json will clear this view and have less content in the hook files.

Before rewriting we'll need a base template on how it will look like, then we can start creating this and implement it into the BDN.

[MaurerThomas]

Might need some minor modifications : https://github.com/Parabot/Parabot/blob/master/src/main/java/org/parabot/core/parsers/hooks/JSONHookParser.java

[MaurerThomas]

{
"injector":{
     "interfaces":{
      "add": [{ }]
     },
     "getters": {
      "add": [{ }]
     },
     "setters": {
       "add": [{ }]
     },
     "callbacks": {
       "add": [{ }]
     },
     "invokers": {
       "add": [{ }]
     }
  }
}