SimBrief integration #405 (#635)

* SimBrief integration #405

* Add briefing as API response; add acars_xml field #405

app/Database/factories/SimbriefFactory.php

@@ -0,0 +1,21 @@
+<?php
+
+/** @var \Illuminate\Database\Eloquent\Factory $factory */
+
+use Carbon\Carbon;
+use Faker\Generator as Faker;
+
+$factory->define(App\Models\SimBrief::class, function (Faker $faker) {
+    return [
+        'id'         => $faker->unique()->numberBetween(10, 10000000),
+        'user_id'    => null,
+        'flight_id'  => null,
+        'pirep_id'   => null,
+        'acars_xml'  => '',
+        'ofp_xml'    => '',
+        'created_at' => Carbon::now('UTC')->toDateTimeString(),
+        'updated_at' => function (array $sb) {
+            return $sb['created_at'];
+        },
+    ];
+});