docs: add Japanese README

[eltociear]

I created Japanese translated README.

[chg0901]

thank you for your pr, we will check it asap~

[chg0901]

I use kimi in Chinese to review these three readme files, here is the report, please follow the same or similar format to review the readme files in other LLMs. Best Regrads~

https://kimi.moonshot.cn/share/cq8ueg2vk6g2knns2nb0

[chg0901]

I use kimi in Chinese to review these three readme files, here is the report, please follow the same or similar format to review the readme files in other LLMs. Best Regrads~

https://kimi.moonshot.cn/share/cq8ueg2vk6g2knns2nb0

@MING-ZCH Hi, ChenHao, is this PR ready to merge? (Even though I just merged the EmoLLM V3.0 updates)

@eltociear Could you please check and add the new translations related to #280 #277 and #274? Thank you very much.

By the way, may I ask where you are from? We would like to invite you to join our developers' community.

Best Regards~

[MING-ZCH]

This PR is meaningful, and we need to trouble @eltociear to update to the latest version, thanks！

[MING-ZCH]

Please update to the latest version, thanks！

[aJupyter]

Thank you for your contribution, we need you to update the Japanese version to the latest version, special thanks.