Add wizard page for the logging configuration

resolves #6129

application/forms/Install/LoggingPage.php

@@ -0,0 +1,67 @@
+<?php
+// @codeCoverageIgnoreStart
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Form\Install;
+
+use Zend_Config;
+use Icinga\Web\Wizard\Page;
+use Icinga\Form\Config\LoggingForm;
+
+class LoggingPage extends Page
+{
+    /**
+     * The logging form
+     *
+     * @var LoggingForm
+     */
+    protected $loggingForm;
+
+    /**
+     * Initialize this LoggingPage
+     */
+    public function init()
+    {
+        $this->setName('logging');
+    }
+
+    /**
+     * Create and return the logging form
+     *
+     * @return  LoggingForm
+     */
+    protected function createForm()
+    {
+        if ($this->loggingForm === null) {
+            $this->loggingForm = new LoggingForm();
+            $this->loggingForm->hideButtons();
+            $this->loggingForm->setTokenDisabled();
+            $this->loggingForm->setRequest($this->getRequest());
+            $this->loggingForm->setConfiguration($this->getConfiguration());
+        }
+
+        return $this->loggingForm;
+    }
+
+    /**
+     * Create this wizard page
+     */
+    protected function create()
+    {
+        $loggingForm = $this->createForm();
+        $loggingForm->buildForm(); // Needs to get called manually as it's nothing that Zend knows about
+        $this->addSubForm($loggingForm, $loggingForm->getName());
+    }
+
+    /**
+     * Return a config containing all values provided by the user
+     *
+     * @return  Zend_Config
+     */
+    public function getConfig()
+    {
+        return $this->createForm()->getConfig();
+    }
+}
+// @codeCoverageIgnoreEnd