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/templates/admin/ce_settings/helpers/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/templates/admin/ce_settings/helpers/options/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/templates/admin/ce_settings/helpers/options/options.tpl

@@ -0,0 +1,27 @@
+{**
+ * Creative Elements - live Theme & Page Builder
+ *
+ * @author    WebshopWorks
+ * @copyright 2019-2022 WebshopWorks.com
+ * @license   One domain support license
+ *}
+
+{extends file="helpers/options/options.tpl"}
+
+{block name="input" append}
+	{if $field['type'] == 'multiselect'}
+		<div class="col-lg-9">
+		{if $field.list}
+			{$json = Configuration::get($key)}
+			{if $json}{$selected = json_decode($json)}{else}{$selected = []}{/if}
+			<select multiple class="form-control fixed-width-xxl {if isset($field.class)}{$field.class}{/if}" name="{$key}[]"{if isset($field.js)} onchange="{$field.js}"{/if} id="{$key}" {if isset($field.size)} size="{$field.size}"{/if}>
+				{foreach $field.list as $option}
+					<option value="{$option[$field['identifier']]}"{if in_array($option[$field.identifier], $selected)} selected="selected"{/if}>{$option.name}</option>
+				{/foreach}
+			</select>
+		{elseif isset($input.empty_message)}
+			{$input.empty_message}
+		{/if}
+		</div>
+	{/if}
+{/block}