WHMCS module programming -- 2

We want to program a sitemap generator:

- google
- yandex
- bing
- baidu

- incl. scheduling
- incl (good!) documentation
- full whmcs GUI support in English language
- integration of the sitemap options of the search engines
https://developers.google.com/search/docs/advanced/sitemaps/build-sitemap?hl=en
https://www.bing.com/webmasters/help/Sitemaps-3b5cf6ed
https://yandex.com/support/webmaster/indexing-options/sitemap.html
https://ziyuan.baidu.com/linksubmit/index
- automatic upload of the sitemap to the search engine
- all rights and sources go to our site
- sitemaps must be valid to this standard: https://www.sitemaps.org/protocol.html