Add `ahisto_named_entity_search.index.RemoteManateeIndex`
This addition is made possible by <https://gitlab.fi.muni.cz/nlp/ahisto/-/commit/e74b0c7>.
SCHEDULED DOWNTIME: GitLab's virtual host must be rebooted to apply security updates. The reboot will occur on Monday, 2024-05-06, between 03:45 and 4:00 AM.
This addition is made possible by <https://gitlab.fi.muni.cz/nlp/ahisto/-/commit/e74b0c7>.