add custom field in customize setion

function custom_register_theme_customizer( $wp_customize ) {


$wp_customize->add_section( 'custom_new_section_featured' , array(
'title'      => 'Featured & content',
'description'=> '',
'priority'   => 94,
) );


$wp_customize->add_setting(
       'custom_featured_sliderhd', 'sanitize_callback' == 'esc_url_raw' ,
       array(
           'default'     => false
       )
   );


$wp_customize->add_control(
new WP_Customize_Control(
$wp_customize,
'featured_sliderhd',
array(
'label'      => 'Disable Featured  POSTS',
'section'    => 'custom_new_section_featured',
'settings'   => 'custom_featured_sliderhd',
'type' => 'checkbox',
'priority' => 1
)
)
);



}
add_action( 'customize_register', 'custom_register_theme_customizer' );