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/cms/controllers/themeoptions/config_form.yaml

@@ -0,0 +1,21 @@
+# ===================================
+#  Form Behavior Config
+# ===================================
+
+# Record name
+name: cms::lang.theme.theme_label
+
+# Fields are defined by extension
+form: []
+
+# Model Class name
+modelClass: Cms\Models\ThemeData
+
+# Default redirect location
+defaultRedirect: cms/themes
+
+# Update page
+update:
+    title: cms::lang.theme.customize_theme
+    redirect: cms/themes
+    redirectClose: cms/themes