/chat-messages (service api) files parameter transfer_method to add tool file type

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

In chatworkflow, I use advanced-tool-integration to return images. I hope to pass these images to another chatflow through api /chat-messages.So,I hope support /chat-messages (service api) files parameter transfer_method to tool file type.

2. Additional context or comments

No response

3. Can you help us with this feature?

• I am interested in contributing to this feature.