feat(frontend): replace lazy loading with zibll lazysizes

inc/helpers/aksrt-slider.php

@@ -137,8 +137,7 @@ function aksrt_render_slider(array $args = []): string {
         }
 
         if ($image) {
-            $html .= '<img class="swiper-lazy fit-cover" data-src="' . esc_url($image) . '" src="' . esc_url($image) . '" alt="' . esc_attr($alt) . '" loading="lazy">';
-            $html .= '<div class="swiper-lazy-preloader"></div>';
+			$html .= '<img' . aksrt_get_lazy_attr('lazy_sider', (string) $image, 'fit-cover', aksrt_get_lazy_thumb('lg')) . ' alt="' . esc_attr($alt) . '">';
         }
 
         if ($link) {