Add support for Lifter LMS plugin

gistfile1.txt

if ( ! function_exists( 'generate_lifterlms_start' ) ) :
/** 
 * Add LifterLMS starting wrappers
 */
add_action('lifterlms_before_main_content', 'generate_lifterlms_start', 10);
function generate_lifterlms_start() 
{ ?>
	<div id="primary" <?php generate_content_class();?>>
		<main id="main" <?php generate_main_class(); ?>>
			<?php do_action('generate_before_main_content'); ?>
			<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> <?php generate_article_schema( 'CreativeWork' ); ?>>
				<div class="inside-article">
					<?php do_action( 'generate_before_content'); ?>
					<div class="entry-content" itemprop="text">
<?php }
endif;

if ( ! function_exists( 'generate_lifterlms_end' ) ) :
/** 
 * Add Lifter LMS ending wrappers
 */
add_action('lifterlms_after_main_content', 'generate_lifterlms_end', 10);
function generate_lifterlms_end() 
{
?>
					</div><!-- .entry-content -->
					<?php do_action( 'generate_after_content'); ?>
				</div><!-- .inside-article -->
			</article><!-- #post-## -->
			<?php do_action('generate_after_main_content'); ?>
		</main><!-- #main -->
	</div><!-- #primary -->
<?php
}
endif;

function tu_llms_theme_support(){
    add_theme_support( 'lifterlms-sidebars' );
}
add_action( 'after_setup_theme', 'tu_llms_theme_support' );

function tu_llms_sidebar_function( $id ) {
	$my_sidebar_id = 'sidebar-1';
	return $my_sidebar_id;
}
add_filter( 'llms_get_theme_default_sidebar', 'tu_llms_sidebar_function' );