add "Requires Plugins" to plugin headers

The headers will be supported with WordPress 6.5. The dependency on
"statify" was present from the start, so this just adds another layer
of convenience for users on WP 6.5 or later.

statify-blacklist.php

@@ -7,14 +7,17 @@
  * @license     GPL-2.0+
  *
  * @wordpress-plugin
- * Plugin Name: Statify Filter
- * Plugin URI:  https://wordpress.org/plugins/statify-blacklist/
- * Description: Extension for the Statify plugin to add customizable filters. (formerly "Statify Blacklist)
- * Version:     1.7.0
- * Author:      Stefan Kalscheuer (@stklcode)
- * Author URI:  https://www.stklcode.de
- * Text Domain: statify-blacklist
- * License:     GPLv2 or later
+ * Plugin Name:       Statify Filter
+ * Plugin URI:        https://wordpress.org/plugins/statify-blacklist/
+ * Description:       Extension for the Statify plugin to add customizable filters. (formerly "Statify Blacklist)
+ * Version:           1.7.0
+ * Requires at least: 4.7
+ * Requires PHP:      5.5
+ * Requires Plugins:  statify
+ * Author:            Stefan Kalscheuer (@stklcode)
+ * Author URI:        https://www.stklcode.de
+ * Text Domain:       statify-blacklist
+ * License:           GPLv2 or later
  *
  * Statify Filter is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by