Create custom field

curl --request POST \
  --url https://api.dualentry.com/public/v1/custom-fields/ \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "name": "<string>",
  "applies_to": [
    {
      "is_active": true,
      "is_required": false
    }
  ],
  "description": "<string>",
  "helper_text": "<string>",
  "default_value": "<string>",
  "company_id": 123,
  "company_ids": [
    123
  ],
  "is_active": true,
  "options": [
    "<string>"
  ]
}
'

{
  "id": 123,
  "name": "<string>",
  "is_active": true,
  "company_id": 123,
  "company_ids": [],
  "description": "<string>",
  "helper_text": "<string>",
  "applies_to": [],
  "default_value": "<string>",
  "options": [
    "<string>"
  ]
}