Allow gh label create to forcibly create existing labels #5450

Hey, would love if the feature here #2196 was addressed. I just tried out creating a label that already exists i.e. gh label create test and got

HTTP 422: Validation Failed (https://api.github.com/repos/****/****/labels)
Label.name already exists

IMO gh cli should create if not exist already, or exit gracefully if already exist

Should I use this issue to track feature requests against the gh label command or open a new one?

Another feature I think would be useful is listing/viewing specific labels e.g. gh label view test, similar to the gh pr view 123 behaviour.

Originally posted by @mishabruml in #446 (comment)