Add Custom Fares (#1323)

* Update EventServiceProvider.php

Add FareListener

* Create Fares.php

* Create FareListener.php

* Update ExpenseListener.php

* Update PirepFinanceService.php

Add listener for the fares, process them like the custom expenses and apply if there are any returned

app/Events/Fares.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Events;
+
+use App\Contracts\Event;
+use App\Models\Pirep;
+
+/**
+ * This event is dispatched when the fares for a flight report
+ * are collected. Your listeners should return a list of Fare
+ * models. Don't call save on the model!
+ *
+ * Example return:
+ *
+ *   new Fare([
+ *      'name'  => '', # displayed as the memo
+ *      'type'  => [INTEGER], # from FareType enum class
+ *      'price' => [DECIMAL],
+ *      'cost'  => [DECIMAL], # optional
+ *      'notes' => '', # used as Transaction Group
+ *   ]);
+ *
+ * The event caller will check the 'type' to make sure that it
+ * will filter out fares that only apply to the current process
+ *
+ * The event will have a copy of the PIREP model, if it's applicable
+ */
+class Fares extends Event
+{
+    public $pirep;
+
+    /**
+     * @param Pirep|null $pirep
+     */
+    public function __construct(Pirep $pirep = null)
+    {
+        $this->pirep = $pirep;
+    }
+}