feat: VivesPOS landing on Winter CMS 1.2 — theme + plugin + Dockerfile

- Base: wintercms/winter branch 1.2 (full framework)
- Theme vivespos: Canvas 7 + Bootstrap 5 CDN, custom CSS
- Layout: deferred GTM/GA4 tracking, JSON-LD SoftwareApplication
- Partials: hero (offline-first), features, modes (offline/nube toggle),
  screenshots, pricing (3 planes), comparison, FAQ, CTA
- Plugin VivesPOS.Site with ContactForm
- Dockerfile: PHP 8.2 Apache, port 80, healthcheck
- Added winter/wn-pages, blog, sitemap, seo plugins
- Active theme set to vivespos

modules/backend/models/editorsetting/_toolbar_presets.php

@@ -0,0 +1,10 @@
+<div>
+    <?php foreach ($this->formWidget->model->getEditorToolbarPresets() as $name => $preset): ?>
+        <button type="button" class="btn btn-default btn-sm"
+                data-preset="<?= e($preset) ?>"
+                onclick="document.querySelector('#Form-field-EditorSetting-html_toolbar_buttons').value = this.dataset.preset"
+        >
+            <?= e(trans('backend::lang.editor.toolbar_buttons_presets.' . $name)) ?>
+        </button>
+    <?php endforeach; ?>
+</div>