Add X13 WebP module for image conversion to next-generation formats

- Implemented the main module class with essential properties and methods.
- Added translation support for various user interface strings.
- Created XML configuration file for module versioning.
- Ensured compatibility with different PHP versions and PrestaShop versions.

modules/x13webp/views/js/front/x13webp.front.js

@@ -0,0 +1,56 @@
+$(document).ready(() => {
+  let x13images = [];
+
+  $("img").each(function () {
+    const imgSrc = $(this).attr("data-src") ?? $(this).attr("data-original") ?? $(this).attr("src");
+
+    if (!imgSrc) return;
+    if (imgSrc.includes(".webp")) return;
+
+    if ($(this).siblings("source").length && $(this).siblings("source").attr("srcset") !== undefined) {
+  if ($(this).siblings("source").attr("srcset").includes(".webp")) {
+    return;
+  }
+}
+
+x13images.push(imgSrc.trim());
+  });
+
+$("[style]").each(function () {
+  const bgImage = $(this).css("background-image");
+
+  if (bgImage.includes(".webp") || (!bgImage.includes(".jpg") && !bgImage.includes(".png"))) {
+    return;
+  }
+
+  let image = $(this)
+    .css("background-image")
+    .replace(/url\("([^"]+)"\)/, "$1");
+  x13images.push(image.trim());
+});
+
+$("#product #thumbs_list a.fancybox").each(function () {
+  const href = $(this).attr("href");
+  if (href.length) {
+    x13images.push(href.trim());
+  }
+});
+$("#product .images-container .thumb").each(function () {
+  const medium = $(this).data("image-medium-src");
+  const large = $(this).data("image-large-src");
+  if (typeof medium !== 'undefined') {
+    x13images.push(medium.trim());
+  }
+  if (typeof large !== 'undefined') {
+    x13images.push(large.trim());
+  }
+});
+
+$.ajax({
+  url: x13webp_ajax_convert_url,
+  method: "POST",
+  data: {
+    x13images,
+  },
+});
+});