Add Creative Elements templates and update index files

- Introduced new templates for catalog, checkout, contact, and error pages.
- Implemented caching headers and redirection in index.php files across various directories.
- Enhanced product and layout templates for better integration with Creative Elements.
- Added backoffice header styles and scripts for improved UI/UX in the admin panel.

modules/creativeelements/views/lib/material-icons/index.php

@@ -0,0 +1,8 @@
+<?php
+header('Expires: Thu, 28 Feb 2019 00:00:00 GMT');
+header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
+header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
+header('Cache-Control: post-check=0, pre-check=0', false);
+header('Pragma: no-cache');
+header('Location: ../../../../../');
+die;

modules/creativeelements/views/lib/material-icons/material-icons.css

@@ -0,0 +1,24 @@
+@font-face {
+    font-family: Material Icons;
+    font-style: normal;
+    font-weight: 400;
+    src: local("Material Icons"), local("MaterialIcons-Regular"), url(material-icons.woff2) format("woff2"), url(material-icons.woff) format("woff");
+}
+.material-icons {
+    -moz-osx-font-smoothing: grayscale;
+    -webkit-font-feature-settings: "liga";
+    -webkit-font-smoothing: antialiased;
+    direction: ltr;
+    display: inline-block;
+    font-family: Material Icons;
+    font-feature-settings: "liga";
+    font-size: 24px;
+    font-style: normal;
+    font-weight: 400;
+    letter-spacing: normal;
+    line-height: 1;
+    text-rendering: optimizeLegibility;
+    text-transform: none;
+    white-space: nowrap;
+    word-wrap: normal;
+}