Add `Ci::JobToken::OutboundScope`

What does this MR do and why?

Since we added the outbound direction to the job token scope table, we need to make sure that the existing code for the existing job token scope feature only queries against records with the outbound direction.

#346298 (closed)

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.