Provide sitemaps for Google

[mdashlw]

• https://developers.google.com/search/docs/crawling-indexing/sitemaps/overview
• https://developers.google.com/search/docs/crawling-indexing/sitemaps/large-sitemaps
• https://developers.google.com/search/docs/crawling-indexing/sitemaps/image-sitemaps
• https://developers.google.com/search/docs/crawling-indexing/robots/create-robots-txt

robots.txt would link to a sitemap index. Sitemap index would link to actual sitemaps. Each sitemap can have up to 50,000 entries.

[milezzz]

+1 NEEDED