Cleared internal packages - fixes #20 and #21. (#29)

* Fixes #20, #21 issues.

- Moved package /encoding/jsonapi to repository `github.com/neuronlabs/jsonapi` - #20

#21 Changes:
- Removed internal/controller package - moved to /controller
- Removed internal/models package - moved to /mapping
- Removed internal/query, /query/filters, /query/tests packages - moved to /query

Moved /query/mocks to repository `github.com/neuronlabs/neuron-mocks` as a separate repository package.

* Removed readme jsonapi information.

Author: kucjac

README.md

@@ -151,7 +151,6 @@ The `neuron-core` is composed of the following packages:
 * `controller` - is the neuron's core, that registers and stores the models and contains configurations required by other packages.
 * `mapping` - contains the information about the mapped models their fields and settings
 * `config` - contains the configurations structures.
-* `encoding/jsonapi` - allows to marshal and unmarshal the model's, and queries by the https://jsonapi.org/ specification
 * `class` - contains `github.com/neuronlabs/errors` class instances used by the neuron-core package.
 * `repository` - is a package used to store, get and register the repositories nad their factories.
 * `log` - is the logging interface for the neuron based applications.

config/controller_test.go

@@ -1,9 +1,10 @@
 package config
 
 import (
+	"testing"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"testing"
 )
 
 // TestControllerMapRepositories tests the map repository config function.