Add new Gitlab runner API support

[john-smith-vc]

The old style of using a registration token for Gitlab's runner registration has been deprecated and will soon be removed.

https://docs.gitlab.com/runner/register/#register-a-runner-with-a-registration-token-deprecated

This request is to merge back into the upstream the ability to use the new APIs.

https://docs.gitlab.com/ee/api/users.html#create-a-runner

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[NARKOZ]

Thank you ❤️