Add London Airport and Million Mile Challenges

app/Services/Achievements/Checkers/DistanceChecker.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Services\Achievements\Checkers;
+
+use App\Models\User;
+use App\Models\UserFlight;
+use Illuminate\Database\Eloquent\Collection;
+
+class DistanceChecker extends BaseChecker
+{
+    public function check(): void
+    {
+        /**
+         * @var $flights Collection<int, UserFlight>
+         */
+        $flights = $this->flights();
+
+        $totalDistance = $flights->sum('distance');
+
+        $this->awardProgress((int) $totalDistance, 'distance.circumference_of_the_earth');
+        $this->awardProgress((int) $totalDistance, 'distance.to_the_moon');
+        $this->awardProgress((int) $totalDistance, 'distance.gigametre');
+        $this->awardProgress((int) $totalDistance, 'distance.million_miles');
+
+    }
+}