Organize Vertex starter into reusable sections

Use remote logos and avatars, refine landing copy, and document the template structure.

components/shared/feature-copy.tsx

@@ -0,0 +1,14 @@
+export function FeatureCopy({
+  title,
+  description,
+}: {
+  title: string
+  description: string
+}) {
+  return (
+    <div className="relative z-10 bg-background p-6 sm:p-7">
+      <h3 className="text-lg font-medium tracking-[-0.025em]">{title}</h3>
+      <p className="mt-2 max-w-md text-sm leading-6 text-muted-foreground">{description}</p>
+    </div>
+  )
+}