Feat: Upload file UI/UX enhancements

[Omarlsg98]

What problem does this PR solve?

Modifies the UX for uploading process on the website.

• Adds option to parse on creation the files
• Adds progress bar to display progress of chunk
• Adds per file feedback on uploading operation

Screenshots:

• Show files uploading:
  

• Errors on specific files
  

Type of change

• New Feature (non-breaking change which adds functionality)

[cike8899]

Please fix the error in uploading files

[Omarlsg98]

@cike8899 I'm not able to reproduce your error, can you give me more details on how it occurs?

Also, please notice I changed a couple of lines in the API server to return the successful files. Maybe you need to redeploy the backend with those changes(?)

    err, files = FileService.upload_document(kb, file_objs, current_user.id)
    files = [f[0] for f in files] # remove the blob

    if err:
        return get_json_result(
            data=files, message="\n".join(err), code=settings.RetCode.SERVER_ERROR)
    return get_json_result(data=files)

[cike8899]

By default, no document parsing is required after uploading the file.

[Omarlsg98]

@cike8899 is there any reason the user would not want to parse the files? As far as i see the documents are useless if they are not parsed

[KevinHuSh]

Appreciations!

After uploading, people may want to alter the chunk method configuration instead of chunking by default method.
The chunking configurations could be different from file to file.

[Omarlsg98]

@KevinHuSh That make sense! Maybe it will be better if the user could choose/override chunking methods directly on the upload file modal. Maybe for a future PR.
@cike8899 I changed parseOnCreation to be false by default for now!