Add first korean translation

[Baejw0111]

• translation install.md to korean

I would like to translate the d2 docs site into Korean.

[alixander]

@Baejw0111 thanks so much for putting the time and effort to do this.

I've made a PR to set translations up: https://github.com/terrastruct/d2-docs/pull/178/files

Can you rebase master and then move your file to the appropriate location? In this case it would be i18n/ko/docusaurus-plugin-content-docs/current/tour/install.md

Also can you sign your commit please? We have it set up as an org-wide setting: https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits

[Baejw0111]

I applied all your requests. By the way, thank you very much for accepting my offer! I hope that the developers around me will use this good language a lot through this D2 docs translation work.

[alixander]

it looks like some commits are verified and some not, and it also looks like you might've merged the PR commits instead of master. Would you mind cleaning the history up please (such that the changes already in master don't show up in "Files changed")

thanks again!