some refactoring for tests and adding some tables

app/Repositories/AircraftClassRepository.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Repositories;
+
+use App\Models\AircraftClass;
+use InfyOm\Generator\Common\BaseRepository;
+
+class AircraftClassRepository extends BaseRepository
+{
+    /**
+     * @var array
+     */
+    protected $fieldSearchable = [
+        'class',
+        'name',
+        'notes'
+    ];
+
+    /**
+     * Configure the Model
+     **/
+    public function model()
+    {
+        return AircraftClass::class;
+    }
+}