NEAR Intents: Create an order

https://1click.chaindefuser.com/docs/v0/openapi.yaml post /v0/orders Creates a confidential order.

Errors. Branch on code, never on title or detail. New codes arrive without a major version, so treat an unrecognized code as the HTTP status alone.

Status	Codes
400	malformed-request, validation-failed, request-rejected, order-rejected
401	authentication-required
403	client-generated-id
409	resource-type-mismatch
429	rate-limit-exceeded
500	internal-error
503	service-unavailable