* generate sitemap.xml file
* set up endpoint for sitemap
* Update sitemap generation
- remove sitemap generation from scheduled tasks
- add posts query for sitemap
- create sitemap module in API crate
* remove priority and change freq from sitemap
* add configuration option for number of posts for sitemap
* fix default config
* rate limit sitemap endpoint
* update sitemap query
* update sitemap generation
- remove config value for query limit
- adjust sitemap generation to query changes
- tidy up error handling
* refactor sitemap generation loop
* remove `limit` argument
* refactor `generate_urlset` and add unit test
* change query to only fetch local posts of past 24h
* fix outdated comment and log
* cargo fmt
