Add snowflake reservation

curl --request POST \
  --url https://api.fluxer.app/v1/admin/snowflake-reservations/add \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "jsmith@example.com",
  "snowflake": "<string>"
}
'

{
  "success": true
}