Create the first models with migrations for handling invoices.

app/Models/Invoiceitem.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Invoiceitem extends Model
+{
+    use SoftDeletes;
+}