feat(labels): add missing params and edit links

What does this MR do and why?

This MR updates the Go SDK to fully support missing label parameters documented in the GitLab API.
Specifically, it enhances the following options to match the API:

• Adds the archived field to CreateLabelOptions to allow creating archived labels when the labels_archive feature flag is enabled.
• Adds the archived field to UpdateLabelOptions so labels can be archived or unarchived.

These changes ensure the SDK remains in sync with the latest GitLab API capabilities for label management.

References

• Related issue: Missing API Parameters in Label Operations (#2229) · Issue · gitlab-org/api/client-go