use tray container for header elements

src/Entity/Browser/Header/Tray/Navigation.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yggverse\Yoda\Entity\Browser\Header\Tray;
+
+use \Yggverse\Yoda\Entity\Browser\Header\Tray;
+use \Yggverse\Yoda\Entity\Browser\Menu;
+
+class Navigation
+{
+    public \GtkMenuButton $gtk;
+
+    // Dependencies
+    public Tray $tray;
+
+    // Requirements
+    public Menu $menu;
+
+    // Defaults
+    private string $_tooltip = 'Navigation';
+
+    public function __construct(
+        Tray $tray
+    ) {
+        // Init dependencies
+        $this->tray = $tray;
+
+        // Init navigation container
+        $this->gtk = new \GtkMenuButton;
+
+        $this->gtk->set_tooltip_text(
+            _($this->_tooltip)
+        );
+
+        // Init menu
+        $this->menu = new Menu(
+            $this->tray->header->browser
+        );
+
+        $this->gtk->set_popup(
+            $this->menu->gtk
+        );
+
+        // Render
+        $this->gtk->show();
+    }
+}