Register a file upload for a knowledge base by its id
Registering a file upload is a three step process:
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
The id of the knowledge base to register the file for
The filename of the file to register
"example.pdf"
The id of the file to register
The content type of the file to register
"application/pdf"
The configuration for the file to register
Optional metadata to attach to the file
{ "category": "legal", "client": "acme" }