support i18n for Japanese

[ks6088ts]

What this PR does / why we need it

5fbfed0 (HEAD -> feature/issue-34_i18n, origin/feature/issue-34_i18n) gen: #file:docs 以下のすべての markdown ファイルを翻訳してください。英語で記載された hoge.md を日本語
翻訳して hoge.ja.md として保存するようにしてください。
d4da00e add i18n config
a42b245 uv add --group docs mkdocs-static-i18n

Which issue(s) this PR fixes:

Fixes #34

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[x] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

ORGANIZATION=<organization-name>
REPOSITORY=<repository-name>

git clone [email protected]:$ORGANIZATION/$REPOSITORY.git
cd $REPOSITORY

• Test the code

make ci-test

What to Check

Verify that the following are valid

• ...

Additional Information