how to add custom icom in elementor

how to add custom icom in elementor

<?php

namespace DrawCon;

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

class Draw_Con_Icon_Manager{

    private static $instance = null;

    public static function instance() {
        if ( is_null( self::$instance ) ) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    function __construct(){
        $this->init();
    }

    public function init() {


        // Custom icon filter
  
        add_filter( 'elementor/icons_manager/additional_tabs', [ $this,'draw_con_flat_icon'] );     

    }

	public function draw_con_flat_icon( $args = array() ) {

	    // Append new icons
	    $new_icons = array(
	        '001-worker-1',
	        '002-welding',
	        '003-waste',
	        '004-walkie-talkie',
	        '005-valve',
	        '006-truck',
	        '007-tools',
	        '008-machine-1',
	        '009-storage',
	        '010-tank-1',
	        '011-siren:before',
	        '012-scheme:before',
	        '013-danger',
	        '014-robot-arm',
	        '015-cart',
	        '016-gear',
	        '017-pump',
	        '018-power-tower',
	        '019-power-press',
	        '020-planning',
	        '021-worker',
	        '022-tank',
	        '023-microprocessor',
	        '024-statistics',
	        '025-meter',
	        '026-mechanism',
	        '027-material',
	        '028-manufacturing-plant',
	        '029-manufacturing',
	        '030-management',
	        '031-machine',
	        '032-gears-1',
	        '033-laser',
	        '034-industrial-robot',
	        '035-parcel',
	        '036-gears',
	        '037-forklift',
	        '038-food',
	        '039-factory-1',
	        '040-factory',
	        '041-eco',
	        '042-monitor',
	        '043-wheel',
	        '044-conveyor',
	        '045-controller',
	        '046-control-system',
	        '047-control-lever',
	        '048-chemical',
	        '049-container',
	        '050-boxes'
	    );
	    
	    $args['draw-con-flaticon'] = array(
	        'name'          => 'draw-con-flaticon',
	        'label'         => esc_html__( 'Draw Flat Icons', 'draw-construction' ),
	        'labelIcon'     => 'fas fa-user',
	        'prefix'        => 'flaticon-',
	        'displayPrefix' => '',
	        'url'           => DRAW_CON_ASSETS . 'css/flaticon.min.css',
	        'icons'         => $new_icons,
	        'ver'           => DRAW_CON_VERSION,
	    );

	    return $args;
	}



}
Draw_Con_Icon_Manager::instance();