Persist agent message

curl --request POST \
  --url https://api.usenaive.ai/v1/companies/{id}/agents/{agentId}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "role": "<string>",
  "text": "<string>",
  "run_id": "<string>"
}
'

{
  "id": "<string>"
}