Support Project CI/CD job token scope API

[Arch Oversight]

Hello,

I would like to see support for the following API:

https://docs.gitlab.com/ee/api/project_job_token_scopes.html

Thanks,
Delta

[Sander van Harmelen]

If your up for it, PR's are always welcome!

[heidiberry]

All eight endpoints for this API are supported in https://github.com/xanzy/go-gitlab/blob/main/job_token_scope.go