docs : Translate the Visitor to Korean

[HongGeonUi]

Translate the Visitor to Korean

This PR is for issue #2282
In this PR I've added the Korean translation for visitor.

Pull request description

made visitor folder in 'localization/ko'
made ect folder in visitor folder
made visiotr_1.png for class diagram
made 'README.md' for visitor page in Korean

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[iluwatar]

Looks good! Thank you for the contribution 🎉

@all-contributors please add @HongGeonUi for translation

[allcontributors]

@iluwatar

I couldn't determine any contributions to add, did you specify any contributions?
Please make sure to use valid contribution names.

@HongGeonUi already contributed before to translation