how i can add checkbox in my wordpress plugin

how i can add checkbox and a save button in my wordpress plugin to activate and deactivate it here is my code:

<?php
/*
Plugin Name: My Plugin
Description: A test plugin
Author: Marco
Version: 1.0
*/

add_action('admin_menu', 'test_plugin_setup_menu');

function test_plugin_setup_menu(){
        add_menu_page( 'Test Plugin Page', 'Test Plugin', 'manage_options', 'test-plugin', 'test_init' );
}

function test_init(){
        echo "<h1>My Plugin Info</h1>";
}

?>

thanks in advance.