Generate gift subscription codes

curl --request POST \
  --url https://api.fluxer.app/v1/admin/codes/gift \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "count": 50,
  "product_type": "gift_1_month"
}
'

{
  "codes": [
    "<string>"
  ]
}