Creates a new api key for the account

curl --request POST \
  --url https://commerce1.on-hellgate.dev/configuration/accounts/{account_id}/keys \
  --header 'X-API-Key: <api-key>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "key_value": "<string>"
}