Deprecate X-Ray CI job and execute dependency config file parser service automatically in a worker

Summary

In #476177 (closed), we reproduced the Repository X-Ray functionality in the GitLab monolith in library classes. In this issue:

• Create a new service/worker that utilizes those library classes.
• Replace the X-Ray CI job execution with that service/worker.

Proposal

Deprecate the X-Ray CI job approach and replace it with executing a new config file parser service in a worker. It should be triggered upon a new commit pushed to the project's default branch.

To reduce redundancy and Gitaly load, we should use an exclusive lease guard to prevent parallel scanning on the same project.