Feature Description
Add a frontmatter parameter that provides a way to add a noindex tag.

Problem/Solution

It's possible to add custom headers using the partials/custom/head-end.html.
However, using this to add a nonindex tag would conflict with the main head.html partial:

{{ if hugo.IsProduction -}}
    <meta name="robots" content="index, follow" />

Alternatives Considered

• Use Robots.txt, though as I understand some pages might get indexed if they are linked
• accept the conflict
• overwrite the current head partial

Additional Context

Duplicate content for versions