Add Korean Translation

[min-kim42]

Nature of issue?

• New feature request

New feature details:

I have translated two documents(README.md, installation.md) into Korean. However, I am not sure where to add these translated files. Could anyone let me know the good place to put them? Thanks!

[catarak]

Thank you! In your PRs you have put them in the right place ✨

[min-kim42]

Thanks for confirming @catarak !