Describe the problem to be solved

In order to make Peertube sites to be easier indexed by search engines we should provide more information about the videos in the sitemap.xml.

Describe the solution you would like

Add:

• video:content_loc
• video:duration
• video:view_count
• video:publication_date
• video:uploader
• video:live
• video:tag

And maybe:

• video:family_friendly - Should be possible to use "sensitive content" value to set this.
• video:rating - Calculate based on likes/dislikes ratio.

https://developers.google.com/search/docs/crawling-indexing/sitemaps/video-sitemaps