Add support to filter and sort

Now supporting:

• Filter:
  • Filter records via filter query string param;
  • Options to avoid filtering: jsonapi_render collection, options: { filter: false };
  • Access filter params via: filter_params in controllers.
• Sort:
  • Sort records via sort query string param;
  • Sort is possible for two kind of objects: ActiveRecord_Relation and Array;
  • Access sort params via: sort_params in controllers.
• Pagination for ActiveRecord_Relation and Array objects.

Fixes:

• Exception handling;
• Pagination count.