[Feature request/Pull request]: add natural sort

I found that there was no natural sort to this plugin, and decided to implement it myself.
Please note that I have the free version of this plugin.

<plugin_dir> refers to the location of the filter-everything plugin, in my case /var/www/html/wp-content/plugins/filter-everything

First, add these 2 lines to <plugin_dir>/src/Admin/FilterFields.php‘s getOrderByOptions function:
– 'naturalasc' => esc_html__( 'Natural «123»', 'filter-everything' ),
– 'naturaldesc' => esc_html__( 'Natural «123»', 'filter-everything' ),
This will add the options in the user’s Sort Terms by dropdown menu.

Add the following case statements to <plugin_dir>/src/Entities/EntityManager.php‘s sortTerms‘s function’s switch statement:

        case 'naturalasc':
            usort( $terms, self::compareNatAsc('name') );
            break;

        case 'naturaldesc':
            usort( $terms, self::compareNatDesc('name') );
            break;

This will point naturalasc and naturaldesc to 2 new function, see next step.

Add these 2 new functions to <plugin_dir>/src/Entities/EntityManager.php‘s sortTerms‘s function:

public static function compareNatAsc( $key ){

    return function ($a, $b) use ($key) {
        $value_1 = isset( $a->$key ) ? strtolower($a->$key) : 0;
        $value_2 = isset( $b->$key ) ? strtolower($b->$key) : 0;

        return strnatcmp( $value_1, $value_2 );
    };
}

public static function compareNatDesc( $key ){

    return function ($a, $b) use ($key) {
        $value_1 = isset( $a->$key ) ? strtolower($a->$key) : 0;
        $value_2 = isset( $b->$key ) ? strtolower($b->$key) : 0;

        return -strnatcmp( $value_1, $value_2 );
    };
}

Please update your code with this, this is a necessary sorting option for me and probably many other.
Thanks.