Get available KB configuration options

curl --request GET \
  --url https://api-sandbox.featherhq.com/v1/knowledge-base/config \
  --header 'x-api-key: <api-key>'

{
  "embedding_models": [
    {
      "name": "<string>",
      "provider": "<string>",
      "dimensions": [
        123
      ],
      "default_dimensions": 123
    }
  ],
  "chunk_sizes": [
    123
  ],
  "chunk_overlaps": [
    123
  ],
  "retrieval_top_k_range": {},
  "defaults": {
    "embedding_model": "<string>",
    "embedding_dimensions": 123,
    "chunk_size": 123,
    "chunk_overlap": 123,
    "retrieval_top_k": 123,
    "pdf_extraction_effort": "<string>"
  }
}