👌 OPTIM: Adding 'beapi.maintenance_mode.is_maintenance_mode' filter

[psaikali]

This filter will give developers a way to customize the maintenance mode decision logic.

Usage

<?php

namespace Something;

/**
 * Disable maintenance mode for logged-in users, except admins
 *
 * @param boolean $is_maintenance_mode
 * @return boolean
 */
function set_custom_maintenance_mode_activation( $is_maintenance_mode ) {
	if ( is_user_logged_in() && current_user_can( 'administrator' ) ) {
		return false;
	}

	return true;
}
add_filter( 'beapi.maintenance_mode.is_maintenance_mode', __NAMESPACE__ . '\\set_custom_maintenance_mode_activation' );