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

config/services.php

@@ -0,0 +1,30 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Third Party Services
+    |--------------------------------------------------------------------------
+    |
+    | This file is for storing the credentials for third party services such
+    | as Mailgun, Postmark, AWS and more. This file provides the de facto
+    | location for this type of information, allowing packages to have
+    | a conventional file to locate the various service credentials.
+    |
+    */
+
+    'mailgun' => [
+        'domain' => env('MAILGUN_DOMAIN'),
+        'endpoint' => env('MAILGUN_ENDPOINT', 'api.mailgun.net'),
+        'secret' => env('MAILGUN_SECRET'),
+    ],
+    'postmark' => [
+        'token' => env('POSTMARK_TOKEN'),
+    ],
+    'ses' => [
+        'key' => env('AWS_ACCESS_KEY_ID'),
+        'region' => env('AWS_DEFAULT_REGION', 'us-east-1'),
+        'secret' => env('AWS_SECRET_ACCESS_KEY'),
+    ],
+];