fc-011 Assistant composer and attachments

Pages

• Library assistant composer - BusDK UI library assistant draft input contract.
• AIComposer UI component - Dedicated BusDK UI reference for AIComposer.
• Library assistant attachments - BusDK UI library assistant attachment list contract.
• AIAttachmentList UI component - Dedicated BusDK UI reference for AIAttachmentList.
• AIDropController UI component - Dedicated BusDK UI reference for AIDropController.