Adds data model for AI Agents file attachments
What does this MR do and why?
This MR adds support for file attachments for AI Agents. These attachments will later be processed so that they can be queried by the chat interface to provide additional context for the chatbot.
Related issue: #457999
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
How to set up and validate locally
Numbered steps to set up and validate the change are strongly suggested.
Edited by Darby Frey