SEO audit tool

A common task is to crawl a site, analyzing page content, meta tags, etc. It would be a nice time-saving feature to have the CMS perform this analysis and produce an interactive, or downloadable report.

My initial thoughts are that this could be broken into a few categories. Search and Social.
* **Search** would report on titles, descriptions, word count of page, structured data, redirects pointing to that page, etc.
* **Social** would check for opengraph and twitter settings, and maybe render a preview of what that would look like

This feature could potentially live in the SEO settings panel. Additionally, we could potentially add some of this of the SEO tab on each page, similar to what Yoast does for WordPress.

No se nombran archivos, pruebas ni puntos de entrada. Empieza revisando el panel de configuración de SEO y la pestaña de SEO por página mencionados en el issue; después, define el alcance de las Search and Social checks y el formato del informe. Done debe significar que el CMS puede rastrear un sitio y generar el informe de auditoría interactivo o descargable acordado.

Escrito por el modelo de indexación a partir del texto del issue.