feat: Generate a structure of Korean document

[0417taehyun]

What I've done

• [x] Set configuration on config.json for document in Korean
• [x] Initialize Korean document by using npm run translate

FYI

There are some people interested in Lean and build a community to contribute this game in Korean. We are going to contribute the details later hence I just created the structure of it through config.json.

[joneugster]

Thanks!