擷取Collection列表

GET https://{Endpoint}/v1/collections

curl -H 'dashvector-auth-token: YOUR_API_KEY' \
 https://YOUR_CLUSTER_ENDPOINT/v1/collections

# example output:
# {
#   "request_id": "89557fca-50ca-400d-9828-a6c9ba5a4228",
#   "code": 0,
#   "message": "",
#   "output": [
#     "quickstart",
#   ]
# }