Add support for verification_level in services and GraphQL
What does this MR do and why?
Related to #572170 (closed)
This code change adds verification level support to AI catalog items. When AI catalog items (like agents and flows) are created, they now automatically inherit the verification level from their project's namespace (such as "GitLab maintained" or "unverified"). Users can also filter AI catalog items by their verification level when browsing the catalog. Additionally, when a namespace's verification status is updated, all AI catalog items within that namespace are automatically updated to match the new verification level. This helps users identify which AI catalog items come from trusted sources.
References
Screenshots or screen recordings
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How to set up and validate locally
- Check out this branch.
- Use the GraphQL queries provided in this comment to test the various cases. The GraphQL endpoint is also listed at the end of the comment.
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