Here is the code sample of what is required for developing a plugin. This needs to go into the main php file within the plugin folder.
Plugin Name: WordPress.org Plugin
Plugin URI: https://developer.wordpress.org/plugins/the-basics/
Description: Basic WordPress Plugin Header Comment
Author URI: https://developer.wordpress.org/
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: wporg
Domain Path: /languages
As described in Getting Started, the header comment is what tells WordPress that a file is a plugin. At a minimum, a header comment must contain the Plugin Name, but several pieces can – and usually should – be included: Plugin Name: (required) The name of your plugin, which will be displayed in the Plugins list in the WordPress Admin.