Idea: Japanese version of documents

Japan indeed has a vibrant open-source community with many skilled developers who could benefit from native-language documentation. Documentation localization is an important step for any project looking to build global communities and adoption.

Benefits of adding Japanese documentation would include:

* Making the technology more accessible to Japanese developers
* Demonstrating commitment to the Japanese user community
* Potentially increasing contributions from Japanese developers
* Creating pathways for community-driven translation efforts

GreptimeDB could also consider this.