monitoring/commands: Move `AddCommentCommand' to `WithCommentCommand'

`AddCommentCommand' will be the command for adding both host and service comments.

refs #6593

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

@@ -0,0 +1,71 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Command\Common;
+
+/**
+ * Base class for commands adding comments
+ */
+abstract class WithCommentCommand extends ObjectCommand
+{
+    /**
+     * Author of the comment
+     *
+     * @var string
+     */
+    protected $author;
+
+    /**
+     * Comment
+     *
+     * @var string
+     */
+    protected $comment;
+
+    /**
+     * Set the author
+     *
+     * @param   string $author
+     *
+     * @return  $this
+     */
+    public function setAuthor($author)
+    {
+        $this->author = (string) $author;
+        return $this;
+    }
+
+    /**
+     * Get the author
+     *
+     * @return string
+     */
+    public function getAuthor()
+    {
+        return $this->author;
+    }
+
+    /**
+     * Set the comment
+     *
+     * @param   string $comment
+     *
+     * @return  $this
+     */
+    public function setComment($comment)
+    {
+        $this->comment = (string) $comment;
+        return $this;
+    }
+
+    /**
+     * Get the comment
+     *
+     * @return string
+     */
+    public function getComment()
+    {
+        return $this->comment;
+    }
+}