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/demo/assets/vendor/font-awesome/less/extras.less

@@ -0,0 +1,93 @@
+/* EXTRAS
+ * -------------------------- */
+
+/* Stacked and layered icon */
+.icon-stack();
+
+/* Animated rotating icon */
+.icon-spin {
+  display: inline-block;
+  -moz-animation: spin 2s infinite linear;
+  -o-animation: spin 2s infinite linear;
+  -webkit-animation: spin 2s infinite linear;
+  animation: spin 2s infinite linear;
+}
+
+/* Prevent stack and spinners from being taken inline when inside a link */
+a .icon-stack,
+a .icon-spin {
+  display: inline-block;
+  text-decoration: none;
+}
+
+@-moz-keyframes spin {
+  0% { -moz-transform: rotate(0deg); }
+  100% { -moz-transform: rotate(359deg); }
+}
+@-webkit-keyframes spin {
+  0% { -webkit-transform: rotate(0deg); }
+  100% { -webkit-transform: rotate(359deg); }
+}
+@-o-keyframes spin {
+  0% { -o-transform: rotate(0deg); }
+  100% { -o-transform: rotate(359deg); }
+}
+@-ms-keyframes spin {
+  0% { -ms-transform: rotate(0deg); }
+  100% { -ms-transform: rotate(359deg); }
+}
+@keyframes spin {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(359deg); }
+}
+
+/* Icon rotations and mirroring */
+.icon-rotate-90:before {
+  -webkit-transform: rotate(90deg);
+  -moz-transform: rotate(90deg);
+  -ms-transform: rotate(90deg);
+  -o-transform: rotate(90deg);
+  transform: rotate(90deg);
+  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=1);
+}
+
+.icon-rotate-180:before {
+  -webkit-transform: rotate(180deg);
+  -moz-transform: rotate(180deg);
+  -ms-transform: rotate(180deg);
+  -o-transform: rotate(180deg);
+  transform: rotate(180deg);
+  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=2);
+}
+
+.icon-rotate-270:before {
+  -webkit-transform: rotate(270deg);
+  -moz-transform: rotate(270deg);
+  -ms-transform: rotate(270deg);
+  -o-transform: rotate(270deg);
+  transform: rotate(270deg);
+  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
+}
+
+.icon-flip-horizontal:before {
+  -webkit-transform: scale(-1, 1);
+  -moz-transform: scale(-1, 1);
+  -ms-transform: scale(-1, 1);
+  -o-transform: scale(-1, 1);
+  transform: scale(-1, 1);
+}
+
+.icon-flip-vertical:before {
+  -webkit-transform: scale(1, -1);
+  -moz-transform: scale(1, -1);
+  -ms-transform: scale(1, -1);
+  -o-transform: scale(1, -1);
+  transform: scale(1, -1);
+}
+
+/* ensure rotation occurs inside anchor tags */
+a {
+  .icon-rotate-90, .icon-rotate-180, .icon-rotate-270, .icon-flip-horizontal, .icon-flip-vertical {
+    &:before { display: inline-block; }
+  }
+}