Ability to add files in the chat history

[apurv101]

Checked

• I searched existing ideas and did not find a similar one
• I added a very descriptive title
• I've clearly described the feature request and motivation for it

Feature request

Hi,
I have extensively used chat history feature of Langchain in my previous applications. But for a new product that I am building I need the files to be also stored somehow in the chat history. They could be images, pdf or spreadsheets just like ChatGPT-4. Does Langchain has those capabilities yet, which will include OCR for text recognition, and processing all these other kinds of documents.
If not, is there any plan to include this in future? If yes, I would love to work on it and contribute!

Motivation

Need it in my new project. Basically I am creating an agent that will automatically interact with invoicing software. We need to be able to upload documents.

Proposal (If applicable)

We can add a way to include files in chat history just like GPT-4.