Simplify events structure - V2.0.0

[stenioanibal]

As a complement to the past refactor PR, this one makes even easier and readable the Events structure. To reach this simplicity, it was needed a break change, specially related to the instance parameters, moving the old pattern to an object one, like:

{
   // instance params
   websocket: {
      enabled: true,
      events: [
         ...
      ]
   },
   ...

In addition, some fixes were implemented, as listed below:

1. Remove exception messages for not found states on event management;
2. Parse prisma returns from intrinsic types to specific ones;
3. Remove unused code;