ym-options.php

<?php
/*
Plugin Name: YM Options Page
Plugin URI: https://yakub.xyz/
Description: The plugin shows you how to build an options page
Author: M Yakub Mizan
Version: 1.0.0
Author URI: https://yakub.xyz
*/

class YM_Options_Page {

	/**
	 * This is the place where we define our hooks
	 * They run when the class is instantiated. 
	**/
	public function __construct()
	{
		//hook the function that will call the add_options_page to add the options
		add_action( 'admin_menu', array($this, 'menu_callback') );
	}

	public function menu_callback()
	{
		add_options_page( 'YM Options Page', 'Ym Options', 'manage_options', 'ym-options', array($this, 'menu_markup') );
	}

	public function menu_markup()
	{
		if ( !current_user_can( 'manage_options' ) )  {
			wp_die( __( 'You do not have sufficient permissions to access this page.' ) );
		}
	?>
		<div class="wrap">
			<h1>YM Options</h1>
		</div>
	<?php
	}
}

new YM_Options_Page();