Invoices can be uploaded

app/Enumerations/InvoiceType.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Enumerations;
+
+use App\Scopes\CommonModel;
+
+class InvoiceType extends CommonModel {
+    public const INVOICE_TYPE_TRAVELLING = 'travelling';
+
+    public const INVOICE_TYPE_PROGRAM = 'program';
+
+    public const INVOICE_TYPE_OTHER = 'other';
+
+    public const INVOICE_TYPE_ACCOMMODATION = 'accommodation';
+
+    public const INVOICE_TYPE_CATERING = 'catering';
+
+
+    protected $fillable = [
+        'slug',
+        'name',
+    ];
+}