List custom object records

curl --request GET \
  --url https://api.openint.dev/v0/unified/crm/custom_objects/{object_name} \
  --header 'x-apikey: <api-key>' \
  --header 'x-connection-id: <api-key>'

{
  "next_cursor": "<string>",
  "has_next_page": true,
  "items": [
    "<any>"
  ]
}