docs(ko): add auto-generated korean docs

[jaehanbyun]

Summary

Added auto-generated Korean documentation to improve accessibility for Korean users, following the procedure in i18n/README.md.

fyi: OpenAI API usage for this translation run was $2.04.

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

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[CLAassistant]

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[jaehanbyun]

@gingerwizard When you have time, ptal :)