add separate flight_fields table and move over to flight_field_values

app/Models/FlightField.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Models;
+
+use App\Interfaces\Model;
+
+/**
+ * Class FlightField
+ * @property string name
+ * @property string slug
+ * @package App\Models
+ */
+class FlightField extends Model
+{
+    public $table = 'flight_fields';
+    public $timestamps = false;
+
+    public $fillable = [
+        'name',
+        'slug',
+        'required',
+    ];
+
+    protected $casts = [
+        'required' => 'boolean',
+    ];
+
+    public static $rules = [
+        'name' => 'required',
+    ];
+
+    /**
+     * When setting the name attribute, also set the slug
+     * @param $name
+     */
+    public function setNameAttribute($name): void
+    {
+        $this->attributes['name'] = $name;
+        $this->attributes['slug'] = str_slug($name);
+    }
+}