Move CI Catalog GraphQL types to FOSS

What does this MR do and why?

We've decided the CI Catalog will be a Core feature with enhancements added in paid tiers, so this MR moves CI Catalog GraphQL types and classes to FOSS.

Since the existing Catalog policies are related to the feature as Ultimate, this MR swaps them out with other existing policies. The Catalog policies will be updated in a future MR and then re-added to the GraphQL classes

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.

Related to #427927 (closed)