curl --request POST \
  --url https://api.envless.cloud/projects/{slug}/environments/{environmentSlug}/variables/bulk \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "variables": [
    {
      "name": "<string>",
      "value": "<string>",
      "type": "string",
      "isSecret": true
    }
  ]
}
'

{
  "success": true,
  "code": 201,
  "message": "Variables created.",
  "data": {
    "created": [
      {
        "id": "<string>",
        "name": "<string>"
      }
    ],
    "skipped": [
      {
        "name": "<string>",
        "reason": "already exists"
      }
    ],
    "count": 123
  }
}