WIP: Try to get languages from librarian bot PR for FTS 
This PR is still in progress, but it is a suggestion about how to get the language from open PRs from the librarian bot.
Please let me know what you think.

Pending: tests, refactor.
For https://huggingface.co/datasets/Osumansan/data-poison/commit/22432ba97e6c559891bd82ca084496a7f8a6699f.diff , it was able to identify 'ko' language, but since it is not supported by DuckDB, it assigns 'none' as stemmer.

cc. @davanstrien 
WIP: Try to get languages from librarian bot PR for FTS : This PR is still in progress, but it is a suggestion about how to get the language from open PRs from the librarian bot.
Please let me know what you think.

Pending: tests, refactor.
For https://huggingface.co/datasets/Osumansan/data-poison/commit/22432ba97e6c559891bd82ca084496a7f8a6699f.diff , it was able to identify 'ko' language, but since it is not supported by DuckDB, it assigns 'none' as stemmer.

cc. @davanstrien 