implement viewport to integrate scrolled window features for data label

src/Entity/Browser/Container/Tab/Page/Content/Viewport.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yggverse\Yoda\Entity\Browser\Container\Tab\Page\Content;
+
+class Viewport
+{
+    public \GtkViewport $gtk;
+
+    // Dependencies
+    public \Yggverse\Yoda\Entity\Browser\Container\Tab\Page\Content $content;
+
+    public function __construct(
+        \Yggverse\Yoda\Entity\Browser\Container\Tab\Page\Content $content
+    ) {
+        // Init dependencies
+        $this->content = $content;
+
+        // Init viewport
+        $this->gtk = new \GtkViewport;
+    }
+}