Create KB

curl --request POST \
  --url https://eu-voiceglow-runtime-vbmbkqccuq-ey.a.run.app/v3/agents/{agentId}/kb \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "content": "<string>",
  "metadata": {
    "description": "<string>"
  },
  "tags": [
    "<string>"
  ],
  "sourceType": "doc",
  "refreshRate": "never",
  "url": "<string>"
}'

{
  "success": true,
  "message": "<string>",
  "data": "<any>"
}