Add fare type for pax/cargo/mixed flights #621 (#623)

app/Models/Enums/FareType.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Models\Enums;
+
+use App\Contracts\Enum;
+
+class FareType extends Enum
+{
+    public const PASSENGER = 0;
+    public const CARGO = 1;
+
+    public static $labels = [
+        self::PASSENGER => 'Passenger',
+        self::CARGO     => 'Cargo',
+    ];
+}