[VOTE] Add grapheme_levenshtein function

Hi, internals.

I started vote to RFC grapheme_levenshtein
RFC: https://wiki.php.net/rfc/grapheme_levenshtein

Voting end is 2025-04-16 00:00:00(UTC+0).

Regards
Yuya

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Yuya Hamada (tekimen)

• https://tekitoh-memdhoi.info
• https://github.com/youkidearitai