how to use zh_CN.utf8 sort

[Hiram-Wong]

SELECT collname FROM pg_collation WHERE collname LIKE 'zh%';
restult is null

select have c posix default ucs_basic unicode

[pmp-p]

We had to remove most i18n support for size reasons, but eventually we will find a way to add them dynamically from pglite options constructor ( like extensions ). No clear ETA though

[tdrz]

Related #898
Draft PR: #905