feat(main): Add base theme: This is the falcon theme out of the box.

This is falcon v3.1.2

falcon/modules/ps_languageselector/ps_languageselector.tpl

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+{**
+ * Copyright since 2007 PrestaShop SA and Contributors
+ * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
+ * that is bundled with this package in the file LICENSE.md.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@prestashop.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+ * versions in the future. If you wish to customize PrestaShop for your
+ * needs please refer to https://devdocs.prestashop.com/ for more information.
+ *
+ * @author    PrestaShop SA and Contributors <contact@prestashop.com>
+ * @copyright Since 2007 PrestaShop SA and Contributors
+ * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
+ *}
+<div id="_desktop_language_selector" class="col-auto flex-grow-0 flex-shrink-0">
+  <select class="js-select-link custom-select" aria-labelledby="language-selector-label">
+    {foreach from=$languages item=language}
+      <option value="{url entity='language' id=$language.id_lang}"{if $language.id_lang == $current_language.id_lang} selected{/if} data-iso-code="{$language.iso_code}">{$language.name_simple}</option>
+    {/foreach}
+  </select>
+</div>