Initial support for importing supplier costs

app/Models/Cost/Phone.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models\Cost;
+
+use App\Models\Service;
+use App\Models\Service\Phone as PhoneService;
+
+class Phone extends Type
+{
+	protected $table = 'cost_phone';
+
+	/* RELATIONS */
+
+	public function service()
+	{
+		return $this->hasOneThrough(Service::class,PhoneService::class,'id','id','service_phone_id','service_id');
+	}
+}