feat: link projects to drolosoft.com pages and add GitHub badge

Main project URLs now point to drolosoft.com product pages with
language-aware links. GitHub repos are shown via a new badge next
to the existing LIVE badge.

static/css/03-components/_cv-section.css

@@ -168,6 +168,32 @@
     letter-spacing: 0.5px;
 }
 
+.github-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.3em;
+    background: #333;
+    color: white;
+    font-weight: 700;
+    font-size: 0.7em;
+    padding: 0.2em 0.5em;
+    border-radius: 3px;
+    margin-left: 0.5em;
+    vertical-align: middle;
+    letter-spacing: 0.5px;
+    text-decoration: none;
+}
+
+.github-badge:hover {
+    background: #555;
+    color: white;
+    text-decoration: none;
+}
+
+.github-badge iconify-icon {
+    font-size: 1.2em;
+}
+
 .maintained-badge {
     display: inline-block;
     background: #3498db;