feat: Adding /file command

[nakul-py]

Add a new /file slash command that opens a file browser slider to select and inject file paths into the chat input.

file.Command.mp4

[nakul-py]

Related to #103

[jtpio]

Thanks @nakul-py for working on this!

Wondering if we will also be available to leverage the change that was recently merged in jupyter-chat (jupyterlab/jupyter-chat#248)? This still needs a release of jupyter-chat before we can use it here.

[nakul-py]

Yes, @jtpio we can also work on drag and drop feature now as jupyter-chat publish release for the drag and drop feature. Will we add this drag and drop feature with this pr or with another?

[brichet]

Thanks @nakul-py.

First, I really like the UI of the file selector, maybe something similar could be ported upstream in Jupyterlab, instead of the current file selector.

About the current PR, I'm not sure about the user experience of it, since you have to “send” the message once to display the file dialog, and then send it again after selecting the file.

jupyter-chat already provides an attach button, that could be added to the current chat by providing an IDocumentManager to the model. It can be tried at https://jupyter-chat.readthedocs.io/en/latest/lite/lab/index.html.
One advantage of using the button is that it natively uses the attachments API of jupyter-chat, and adds the attachments to the messages.

Do you think that we should/could take advantage of the existing UI/UX of jupyter-chat ?

[nakul-py]

First, I really like the UI of the file selector, maybe something similar could be ported upstream in Jupyterlab, instead of the current file selector.

Yes @brichet we can do same for Jupyterlab.

jupyter-chat already provides an attach button, that could be added to the current chat by providing an IDocumentManager to the model. It can be tried at jupyter-chat.readthedocs.io/en/latest/lite/lab/index.html.
One advantage of using the button is that it natively uses the attachments API of jupyter-chat, and adds the attachments to the messages.

I think we can use the attach button instead of using /file command everytime to attach files as in jupyter-chat.