Add BillingPortal Submit component

app/Livewire/BillingPortal/Submit.php

@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2022. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://www.elastic.co/licensing/elastic-license
+ */
+
+namespace App\Livewire\BillingPortal;
+
+use Livewire\Component;
+
+class Submit extends Component
+{
+    public array $context;
+
+    public function mount()
+    {
+        // This is right place to check if everything is set up correctly.
+
+        $this->dispatch('purchase.submit');
+    }
+
+    public function render()
+    {
+        return <<<'HTML'
+            <div></div>    
+        HTML;
+    }
+}