Add label to PRs and issues fixed in a release

[pvdlg]

The label name should configurable. Ideally, once semantic-release/semantic-release#563 is implemented, it should contain a channel variable that will allow to generate a different label for channel on which the fix/feature is included.

For example with the label name released-in-${channel} we would add released-in-@next when releasing on @next and released-in-@latest once the release is added to @latest.

[luisherranz]

Being able to add an in-production label to the issues/PRs would be awesome 😁

[semantic-release-bot]

🎉 This issue has been resolved in version 5.2.0 🎉

The release is available on:

• npm package (@next dist-tag)
• GitHub release

Your semantic-release bot 📦🚀