IsStructured returns true if the format is structured data (JSON, YAML, CSV, TSV).
Note: This function is kept for backward compatibility but is no longer used
for routing output. All list output now goes to the data channel (stdout).
Write routes content to the appropriate output stream.
All list output goes to data.Write() (stdout) for pipeability.
List output includes JSON, YAML, CSV, TSV, and table formats.