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

themes/vivespos/meta/menus/footer.yaml

@@ -0,0 +1,13 @@
+- Producto:
+  - Caracteristicas: "#features"
+  - Offline vs Nube: "#modos"
+  - Precios: "#precios"
+  - Comparativa: "#comparativa"
+- Recursos:
+  - FAQ: "#faq"
+  - Requisitos: "#requisitos"
+  - Instalacion: "#instalacion"
+  - Blog: /blog
+- Contacto:
+  - WhatsApp: "https://wa.me/523317025248"
+  - Soporte: /contacto

themes/vivespos/meta/menus/header.yaml

@@ -0,0 +1,9 @@
+- Inicio: /
+- Caracteristicas: "#features"
+- Offline vs Nube: "#modos"
+- Galeria: "#screens"
+- Precios: "#precios"
+- Comparativa: "#comparativa"
+- FAQ: "#faq"
+- Blog: /blog
+- Contacto: /contacto