Implement document dialogue

[iiiusky]

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1. Is this request related to a challenge you're experiencing?

I use the dialogue function to perform dialogue tasks for individual documents, but I cannot find a place where users can upload documents in the dialog box.

2. Describe the feature you'd like to see

The ability to have document conversations like chatDOC,Users can upload a document in the dialog box, and all answers and questions are based on this document.

3. How will this feature improve your workflow or experience?

You can directly analyze the document, which will save a lot of time and bring more scenarios for use.

4. Additional context or comments

No response

5. Can you help us with this feature?

• I am interested in contributing to this feature.

[bighaidao]

I hope dify can support it quickly