Improve SEO

Nobody has claimed this yet.

This might require extra care due to Bluegenes being a SPA.
https://intermine.readthedocs.io/en/latest/webapp/monitoring-site-usage/search-engines/

*Steps we should take:*
- Generate a sitemap similar to that used in legacy webapp (https://legacy.flymine.org/robots.txt -> https://legacy.flymine.org/sitemap-index.xml -> https://legacy.flymine.org/sitemap0.xml)
- Permanent URLs for a bunch of common report pages
- ~~Best way to implement this would be to track popularity of each report object, and have a web service which returns these~~
- It seems we would rather have **all** the genes and proteins for the main organism be linked in the sitemap - this is currently generated with a [python script](https://github.com/intermine/intermine-sitemaps)
- URLs to all public lists
- URLs to all templates
- Use *Google Search Console URL inspection tool* to see what the crawler sees for each of these page types
- Ideally, we should prerender/SSR
- Homepage
- Specific template page
- Specific list page
- Specific report page

Resources for prerendering:
https://medium.com/@joelsanchezclj/prerendering-a-re-frame-app-with-chrome-headless-bb875de31fd0
https://techascent.com/blog/isomorphic-rendering.html

Remember to ping Google once new sitemap is in place: https://developers.google.com/search/docs/advanced/sitemaps/build-sitemap
(If the sitemap is dynamically generated, we need to ensure to automatically ping Google when it changes.)

Start by reviewing the linked monitoring guidance, the legacy robots.txt and sitemap chain, and the intermine-sitemaps Python script. Use Google Search Console URL inspection to compare the homepage, template, list, and report page types; done requires a sitemap covering the requested public URLs and a clear decision on prerendering or SSR.

Written by the indexing model from the issue text.