Fix: Rename class files and apply coding standard fixes

includes/class-plugin.php

@@ -49,6 +49,6 @@ class Plugin {
 	 * Initialize the plugin
 	 */
 	public function init() {
-		// Initialize plugin
+		// Initialization logic goes here
 	}
 }

includes/updater.php

@@ -1 +1,7 @@
 <?php
+/**
+ * File: updater.php
+ * Description: Placeholder for potential updater logic.
+ *
+ * @package WPALLSTARS\PluginStarterTemplate
+ */