TraceSpan model.
@type t() :: %ExDaytona.Model.TraceSpan{ durationNs: number(), parentSpanId: String.t() | nil, spanAttributes: %{optional(String.t()) => String.t()}, spanId: String.t(), spanName: String.t(), statusCode: String.t() | nil, statusMessage: String.t() | nil, timestamp: String.t(), traceId: String.t() }