monitoring/commands: Add common `ToggleFeature' command

`ToggleFeature' should be used for enabling/disabling concrete features of the monitoring host.

refs #6593

modules/monitoring/library/Monitoring/Command/Common/ToggleFeature.php

@@ -0,0 +1,42 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Command\Common;
+
+use Icinga\Module\Monitoring\Command\IcingaCommand;
+
+/**
+ * Enable/disable features of the monitoring host
+ */
+abstract class ToggleFeature extends IcingaCommand
+{
+    /**
+     * Whether the feature should be enabled or disabled
+     *
+     * @var bool
+     */
+    protected $enable = true;
+
+    /**
+     * Enable the feature
+     *
+     * @return self
+     */
+    public function enable()
+    {
+        $this->enable = true;
+        return $this;
+    }
+
+    /**
+     * Disable the feature
+     *
+     * @return self
+     */
+    public function disable()
+    {
+        $this->enable = false;
+        return $this;
+    }
+}