feat: Add Unstructured Component to Document Loaders

[erichare]

This pull request adds an Unstructured component as a document loader, using the langchain library. Question: Can we have a file picker as a component? Right now i just used a StrInput for providing a file path, but would be cool if we could just choose files directly.

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_{Last Modified at 13 Aug 24 15:46 UTC}

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[ogabrielluiz]

Hey @erichare

We have the FileInput which you have to pass file_types and it will let you open a file picker.

[erichare]

Fantastic @ogabrielluiz . i missed it. i'll update this shortly 😄

[ogabrielluiz]

Hey @erichare

Thank you. Looks really good.