Draft: feat: add filter and search to AI catalog
Relates to issue #555554
This MR was created by Duo in Session 1131754
Changes
- Add filtering capabilities for AI catalog items (flows/agents)
- Implement search functionality across name and description fields
- Add support for filtering by LLM models, tools/integrations, and categories
- Enhance GraphQL API to support advanced filtering options
- Improve user experience for discovering relevant AI catalog items