add video chip to Odoo speed-run blog card on homepage + JS/CSS for video chips

assets/css/style.css

@@ -1196,6 +1196,11 @@ section {
     margin-bottom: 12px;
     align-self: flex-start;
 }
+.blog-card-chip-video {
+    background: rgba(255, 0, 0, 0.1);
+    color: #ff4444;
+    border: 1px solid rgba(255, 0, 0, 0.3);
+}
 .blog-card-date {
     font-size: 0.8rem;
     color: var(--text-muted);