#355 Calculate distance button (#366)

* #355 Calculate distance button in add/edit Flight page

* Styling

* Move add/edit flight logic out of controller and into service layer

* Styling

* Formatting

* Run styleci against modules dir

* Styleci config

* Style fixes in /modules

app/Exceptions/AirportNotFound.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Exceptions;
+
+class AirportNotFound extends HttpException
+{
+    private $icao;
+
+    public function __construct($icao)
+    {
+        $this->icao = $icao;
+        parent::__construct(
+            404,
+            'Airport '.$icao.' not found'
+        );
+    }
+
+    /**
+     * Return the RFC 7807 error type (without the URL root)
+     */
+    public function getErrorType(): string
+    {
+        return 'airport-not-found';
+    }
+
+    /**
+     * Get the detailed error string
+     */
+    public function getErrorDetails(): string
+    {
+        return $this->getMessage();
+    }
+
+    /**
+     * Return an array with the error details, merged with the RFC7807 response
+     */
+    public function getErrorMetadata(): array
+    {
+        return [];
+    }
+}