Get knowledge base

curl --request GET \
  --url https://api.zavu.dev/v1/senders/{senderId}/agent/knowledge-bases/{kbId} \
  --header 'Authorization: Bearer <token>'

{
  "knowledgeBase": {
    "id": "<string>",
    "agentId": "<string>",
    "name": "<string>",
    "documentCount": 123,
    "totalChunks": 123,
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "description": "<string>"
  }
}